Damn Cat or DC, is in the habit of prowling the neighborhood at night and stealing food from a neighbour named Greg. His owners, Patti and Ingrid Randall (also known as Inky) look after him while their parents are away on holiday.

One night DC returns home with a wristwatch round his neck. Patti determines that the watch belongs to a bank teller, Helen Jenkins, who was kidnapped by two bank robbers.