Playboy Johnny Gray is framed and sent to prison after his stolen car is found at a holdup committed by Rico, and while the latter is not suspected, his henchman Harry, Creeper and Red are convicted with Johnny. Stung by the injustice, when even his fianc?(C)e believes him guilty, Johnny becomes an unruly prisoner and is put in a cell with Cain, head of the prison gang planning a break. The new warden, Frank Sanders, wins Johnny over by changing his cell mate and giving him a chance to work in the prison gardens. Here, he meets Amy Duncan, daughter of prison guard Duncan. In an failed escaped, engineered from the outside by Rico, who is killed, one of Rico's men confesses that Johnny is innocent.