Wolverine must overcome his feelings for Jean, and Storm must overcome her crippling claustrophobia, when the team journeys into the sewer to rescue Jean Grey and Cyclops from a race of hideously deformed mutants known as Morlocks, and their leader Callisto, who wants to make Scott her king.

The Casualty team face their own personal dramas and the tragic consequences of a robbery. An unemployed man, keen to provide for his wife and child, becomes a driver on a ram-raid, which goes horribly wrong. Charlie's showing signs of stress and Maxine's missing father, turns up to tell her he's in love with a girl, a year older than her.