When he accidentally whacks his head on his daughter's wedding day, uptight ad exec Timothy Westerby (Tom Smothers) causes no end of trouble when he starts chasing the hallucinatory image of a 1920s-era flapper girl (Twiggy) that only he can see. Terry Marcel directs this comedy that also stars Phil Silvers, Jim Backus and Sylvia Syms, based on the play of the same name by John T. Chapman.