The family of an old, loathed millionaire named Verner Vade are sick of his dictatorship, and are just waiting for him to fall over and die. When he is attacked one night and disappears, a nosey cops start to investigate. A few days later Verner comes home again, wounded, and is back to his old, angry routines. And the family have had enough.

Brothers Michael and David Tremayne decide to steal the Crown Jewels from the Tower of London, not for criminal purposes, but to make themselves famous.