Rygel’s mind/Crichton’s body leaps at Aeryn/Rygel, demanding his body back. Crichton/Aeryn pulls him off, saying, "we have to try to figure out what happened to us."

As Crichton/Aeryn tries to do that, Rygel/Crichton loudly decides he’s dreaming. Crichton/Aeryn has to slap him around to get his attention.

"Why?" demands Rygel/Crichton, "Why would they want us to switch bodies? Why?"

"I don’t know," answers Crichton/Aeryn, "but if this is some kind of sick experiment I’m billing them for the therapy."

Hoping for more information, Crichton/Aeryn calls for Pilot, but Pilot is having problems of his own. Down in his den, he’s waking up to find himself in Chiana’s body – D’Argo is in his body, and Chiana is in D’Argo.

Aboard the alien ship, its commander – a Halosian named "Tak" – accuses Zhaan of lying. Moya’s defense screen proves she’s a warship.

"You return to your ship when it is corpse," Yoz tells her. That may take some time, though – Talyn damaged the Halosian ship so badly that it can’t fire again for three arns.

Chiana/D’Argo has carried Pilot/Chiana to his station. He takes D’Argo/Pilot through the control process step by step, teaching him to listen for the high-pitched background noise that is Moya’s life support systems.

A few minutes later, everyone gathers in Pilot’s Den. Crichton/Aeryn has made photographs of everybody’s faces, and hung them over the bodies their minds are currently occupying.

"Are these really necessary?" Rygel growls. "Can’t you remember who we are?"

"No, I can’t, Einstein," Crichton replies. "If these guys attack again I’ve got to know who I’m talking to."

Pilot isn’t sure what happened or why they switched bodies. He does know that the neural conduits of the defense screen were damaged, and that they will need to be repaired before the alien ship fires again.

As Pilot gives instructions, Crichton tries to ignore the distracting sight of Rygel picking his body’s nose.

After Pilot explains that the screen should protect them once it’s back up to full strength, Crichton volunteers for the job. As he steers Aeryn’s body out of the room, he asks Aeryn if she’s coming.

Thanks to Aeryn’s extensive knowledge of the ship, they quickly find the conduits they need to fix. "You’re going to have to do all the work," Aeryn warns Crichton – she can’t do a thing with Rygel’s stubby hands.

Tak has decided to accept Zhaan’s offer. He will leave her on his ship and survey Moya – if the ship truly is harmless, he will let Zhaan go.

D’Argo can’t believe how much Pilot does every day. His entire body aches from concentrating so hard, and he’s only doing a fraction of Pilot’s job.

Pilot doesn’t feel well, and tells D’Argo that he may have to run the ship alone. Before he can explain further, Zhaan calls them on the comlink.

She explains the situation, and tells them of Tak’s inspection. Pilot agrees to the plan, but D’Argo warns that he will kill Tak if the Halosian tries any tricks.

Suddenly, Pilot collapses, frothing at the mouth. D’Argo is unable to do anything in Pilot’s bulky body, and yells for the others to come help.

Chiana is terrified, though more for her body than Pilot’s mind. Pilot weakly assures them that he’s feeling better, and reminds them that they must analyze how the weapon switched them so that they can reverse the effects.

They may prove difficult. D’Argo is barely keeping up with maintaining Moya’s basic systems, and has no attention to spare on accessing her memory banks.

Meanwhile, the Halosian shuttle approaches. "We’d better get down there," Crichton tells Rygel, "they’re expecting me – I mean, you – to show them around."

As Aeryn, Rygel, Crichton and Chiana wait for the Halosian to emerge from his ship, Rygel encounters a problem – Crichton’s full bladder. After a quick debate, he heads for a convenient corner.

"Uh, Crichton?" Rygel asks. "Can you show me how to do this?"

"Oh my God," Crichton mutters. "Unzip. Pull it out. Point it like a gun, and shoot."

Tak comes aboard. The pleasantries of introductions are interrupted when Rygel has a painful encounter with Crichton’s zipper.

Controlling Moya is slowly getting easier for D’Argo. Pilot is feeling better – Chiana’s body is rejecting him, but he’s okay as long as he remains calm.

What bothers him most is being separated from Moya again. He feels cut off from all his senses.

D’Argo is beginning to understand what he means. Inhabiting Pilot’s body gives him glimpses of the wonders Moya and Pilot have seen, and his short life feels insignificant by comparison.

"But I have no memories of love," Pilot tells him, "or friendship. None. You have the remarkable memories, D’Argo."

Zhaan prays, but the other Halosian – Yoz – interrupts her. Yoz is now convinced Moya means the Halosians no harm, and she has something important to show Zhaan.

She plays a recording of Crais extending peaceful overtures, only to be attacked by the Halosian ship. The former Peacekeeper and Talyn were simply defending themselves when they "attacked" the Halosians.

Yoz explains that Tak wants to evolve, and to do this he must kill as many hostiles as he can. Moya is in terrible danger.

Rygel and Aeryn give Tak the grand tour, pointing out the ship’s lack of weapons at every corner. Feeling he’s hit it off with Tak, Rygel shoos Aeryn away so he can turn the full force of his Hynerian charm on the Halosian.

Meanwhile, Crichton has finished his rewiring. He takes a moment to explore Aeryn’s body.

With a gleeful cry, he begins shaking his breasts around. Then he turns around to see Chiana and Aeryn staring at him.

"C’mon, man!" he tells them. "They’re here. They’re right here. They’ve been here for a couple of arns, and I just had to –"

"You are mentally damaged," Aeryn tells him.

"No," says Crichton, "I’m a guy. A guy – guys dream about this sort of thing."

Aeryn warns him, "If I find you’ve been dreaming anything else to my body, I’ll break your legs, even if they are mine."

Chiana needs some help checking out the power conduits – unless Crichton needs more "private time." Crichton tells her he doesn’t want to think about what she’s been doing in D’Argo’s body.

A level below them, Tak finally agrees that Moya has no weapons. Rygel assumes all is well now, and invites him to a celebration feast.

Tak begs off, saying he feels unwell. Then he vomits all over the deck and apologizes.

"That’s all right," Rygel tells him, "we do that sort of thing all the time on Moya. I just peed in the maintenance bay."

Rygel has just one request: he’d like to be switched back to his own body right away. Tak has no idea what he’s talking about, but assures him that he won’t have to deal with the problem much longer.

As they leave, the vomit clumps together and begins climbing up a neural conduit, which gives off sparks and dies.

Shortly after Tak leaves, Moya notices the damage from Tak’s vomit. D’Argo’s inexperience with her systems makes it impossible to tell exactly what’s happening, though.

Tak asks Zhaan about the talk of "switching back", but doesn’t really care about the answer. The weapons are powered up and he’s ready to destroy Moya.

"You know this is wrong," Zhaan tells Yoz. Yoz agrees, but the Halosian code forbids her from taking action.

Thinking fast, Zhaan guesses that the self-centered Halosian code would allow Yoz to replace Tak if he failed in his mission. Yoz agrees with this – but Tak hasn’t failed yet.

Zhaan takes little consolation in Yoz’s promise to talk again if Tak fails to destroy Moya this time.

The vomit continues to eat at Moya’s systems.

Chiana intercepts Rygel in a corridor. She thinks their only chance is to flee while they can in D’Argo’s and Crichton’s bodies.

Rygel refuses to leave without regaining his body. Chiana does her best to seduce him, but he stands fast.

"Only a royal Hynerian can reclaim my throne," he tells her, "and the hope of executing the cousin who betrayed me is the only reason I live."

Crichton and Aeryn find them. They ask what Tak did on the ship, but Rygel didn’t see anything unusual – Tak looked around Moya, threw up and left.

The others immediately drag him off to see where the Halosian threw up.

As soon as they get there, the cause of the damage is obvious. Tak’s "vomit" has crept around Moya’s conduits, destroying the connections that power the defense screen.

Crichton decides to try rerouting the defense screen to another power cell. He also orders Rygel to get some alkaline substances to neutralize the acid.

Chiana rushes down to Pilot’s den to reroute the defense screen. Meanwhile, Crichton decides he’ll have to take the screen offline for a couple of seconds so they can make the changeover – which will expose Moya to a Halosian attack.

The screen goes down. The Halosians cackle with glee – but just as they pull the trigger, everyone completes their respective tasks and the shield goes up again.

The blast hits Moya, and energy leaps among the crew’s bodies again.

"Oh, no," Crichton says. "I’m Aeryn. Who’s Crichton?"

"Bzzt!" says Rygel. "I am."

"Yotz!" curses Aeryn.

As everyone hands over nametags, Rygel/Crichton looks on the bright side. "We’ve switched," he points out, "so if we can switch to here then we can switch back to our original bodies."

Things aren’t looking so good in Pilot’s den, though. Chiana is now in Pilot’s body, D’Argo is in Chiana’s body, and Pilot is unconscious in D’Argo’s body.

Worse, the habitually unfocused Chiana is having even more trouble controlling Moya than D’Argo did. D’Argo tries to coach her, with little success.

Tak is annoyed by the still-functional defense screen, but he claims he hasn’t failed yet. He plans to destroy Moya by ramming her.

Zhaan begs Yoz to intervene, insisting that Tak has failed. The ambitious Yoz agrees, and tears Tak’s throat out.

Then Yoz decides to carry out his plan to ram Moya herself.

The others try to figure out what happened. Crichton has a theory: the Halosian weapon interacted with the partially activated defense screen to switch their minds.

If that’s the case, Crichton says, then they should set the screen to the same power level, get in the same places they were in when they were first hit, and then "moon the Halosians and hope they’ll shoot us again."

D’Argo asks, "Are you sure about this, John?"

"Nope," says Crichton.

D’Argo points out, "Another blast could kill us."

"Yep," Crichton agrees.

Unfortunately, the Halosian ship is ramming the, not shooting at them. D’Argo orders Crichton and the others back to the bridge – he’ll wake Pilot and get him into position, while coaching Chiana through the evasive maneuvers.

Yoz has it all worked out. As soon as she has her ship on a ramming course, she’ll escape in Zhaan’s transport pod.

"Such a warrior’s code," Zhaan snaps, "killing defenseless beings." In a powerful effort of will, she wilts the hand that is chained to the wall and breaks free.

She knocks out Yoz with a single blow, and pulls the Halosian ship out of the collision course at the very last moment. Then she checks in with the others.

Deciding the whole situation would take too long to explain, Crichton/Rygel tells Zhaan, "We need you to do us a favor. We need you to shoot us again."

"What is this madness?" asks Zhaan. "Rygel, why do you have a picture of Crichton on your chest?"

She demands to talk to Crichton. "She won’t listen to Rygel," Crichton/Rygel tells Aeryn/Crichton.

"I told you!" says Rygel/Aeryn. "You all say I’m paranoid, but it’s true – no one frelling listens to me."

Zhaan is now thoroughly confused.

"We’ll explain later," says Aeryn/Crichton. "Just shoot us, Zhaan. Full power and don’t worry, we’ll have the screen up."

Putting on her best dim-witted Crichton face – and adding a big thumbs-up for verisimilitude – Aeryn says, "Trust me, everything will be all right." Zhaan takes Crichton’s word for it and prepares to fire.

Aboard Moya, everyone races to be in the proper positions. D’Argo can’t wake Pilot up – and Chiana’s body is too small for him to carry his own.

Just as Zhaan fires, Pilot wakes up enough for D’Argo to haul him into position. The blast hits, and everyone switches bodies again.

"I’ll just crawl back to my royal bedchamber," Crichton says. "Joke, Aeryn. I’m back."

Pilot’s most interested in how much Talyn has grown. Zhaan reports that he’s larger and more powerful, but Crais’ act of self-defense suggests that the former Peacekeeper might not be using the baby Leviathan as a weapon of destruction.

His curiosity satisfied, Pilot begins sharing new his experiences with Moya.

D’Argo is curious why his sensitive tentacles are a bit sore after Chiana’s time in her body. He also tells her – with some embarrassment -- that he liked being in her body.

They disappear down the corridor together, to Aeryn and Crichton’s amusement.

"Well, they say you have to walk a mile in someone’s shoes to understand them," Crichton comments.

Aeryn points out, "I certainly know what you were doing when you were in my shoes."

"It’s okay," she continues. "You were in my shoes, I was in your pants . . ."

As she saunters off, Crichton asks, "Excuse me?" Then he runs after her, smiling.