Godber takes up boxing and wins a place in the prison championship, so Fletcher sees a chance for a bit of a flutter. Then Harry Grout takes an interest and insists that the fight is 'fixed'. When one of Grout's rivals takes a similar interest in Godber's opponent, it looks as if nobody can win. Fletcher, however, has other ideas.

When a bottle of pills goes missing from the Doctor's surgery, Harry Grout is worried that investigation of the theft by the prison authorities will jeopardise some of his activities. Grout insists that Fletcher must find the pills and return them before the warders can take action.

Fletcher's new cellmate turns out to be the judge who sentenced him to five years in Slade Prison.