Jackson is a lonely serial killer who is really beginning to question the point of all his killing. He is losing focus on why he started to kill in the first place. The future looks bleak until he meets a blind girl, Shelly, who begins to show him that life isn't so bad. It is all up to Jackson to decide if he's going to stop killing and start learning responsibility and think about finding a real job and starting a family.

The Doctor and Mel visit Paradise Towers, a residential complex that promises a peaceful life to its residents. However, the establishment is far from what its name suggests: A conflict persists among the Kangs, humanesque multicolour beings who gather in opposing gangs based on which colour of the rainbow they bear; killer cleaning robots prowl the halls, and a secret in the complex's basement poses the greatest threat of all.