 Cat, expecting to encounter his female counterpart, is shocked to find it to be actually a male dog-like humanoid named Dog (Matthew Devitt).Holly and Hilly reveal that they need a day to repair the Hop Drive, leaving the two groups to decide to socialise in the disco for the night.Lister and Rimmer are soon put off by their counterparts – the former criticising Deb on her qualities despite sharing them himself, and the latter resisting Arlene's overbearing sexual advances – while Cat and Dog disagree on dance techniques.