The two parts (the second in particular) are often collectively cited as among the weakest examples of a Red Dwarf story in the show's history.
The prank in question concerned Ackerman and a truth serum; Hollister reports him "rushing onto the bridge this morning, apologising for being late, saying he had been having 'jiggy jiggy' with the science officer's wife and had not allowed enough time to change out of his Batman costume."
Rimmer asks Lister to get them a programmable virus which they can set to eat potato skins, meaning they would not have to do any work.
Meanwhile, Kryten, Kochanski, and the Cat are taken to another ship on a Canaries mission to find an earlier team that went missing.
Kryten realises this could hold the key to getting out of prison, as they could use it to hit Red Dwarf with a two-year download so it would appear they've served their sentences.
In shaking their superior's hand the virus is passed on and Hollister quickly begins losing his hair and clothes.
Rimmer and Lister enter the hole (a small square cell) to find they're sharing it with a fellow prisoner called Birdman and his sparrow, Pete.
While running from the dinosaur he accidentally created Kryten throws the Time Wand to Bob the Skutter, who then gets eaten by Pete.
They find out that all of Hollister's favourite foods have been eaten by Pete who then burped, farted, vomited, and had a diarrhoea attack on the people who were trying to capture him (with Bob being ejected this way, landing on the Captain's head).
Then two inmates, Kill Crazy and Baxter, stop Lister and Rimmer and steal the Time Wand and accidentally put their bodies on a separate timeline than themselves.
Eventually, they find out Archie had ended up in the Cat's pocket and woke up, trying to burst out of his Canary uniform.
Walking back, they notice a dinosaur egg, leading Rimmer to tell Lister to repair the Time Wand.
The CG Pete dinosaur was combined with interactive animatronic parts; a huge foot and head were produced for close up shots.
[5] Some scenes had to be cut from the final episode, which included a fight sequence between the Pete dinosaur and Kryten.