The crew of Pink Dwarf come across a derelict ship from the 25th Century and attempt to download upgrades for Hab, the ship's computer. While The Cat and Lister argue about whether to change Hab's appearence, Rimmer finds parts of a sex droid, known as a stimulant among the cargo. The stimulant introduces herself as Tyten and upgrades Rimmer's hologram software to Hard Light so he's able to touch. Something that Rimmer is more than willing to do if he can rebuild Tyten to full working order.