Renton set outs on a new life as a detective in Lollipop. His first role takes him onboard SS Lollipop, a gigantic spaceship offering every form of sexual gratification which is operated by a mysterious band of asexual humans called Lagooners. His quest is to locate a particular woman, but it's more difficult than anticipated. Renton is gradually drawn into some sinister goings-on, and he and his colleagues are obliged to engage with a new adversary and solve the Lagooner puzzle. Its resolution constitutes the culmination of this trilogy – in a non-sexual climax!