Mike's quest for peace and quiet is interrupted when he intervenes in a lover's quarrel fought in a swanky restaurant. The next day, Mike is hauled into court and forced to post a peace bond guaranteeing that he'll stay away from the man he fought with the previous evening. When the man turns up dead and his fiancée accuses Mike of the crime, Hammer has to go on the lam to clear himself of the frame-up.
