Timothy Bartlett (Norman Wisdom) is a middle-aged banker who is sent to a seaside resort for a banker's convention. He fears the meetings will be frightfully dull, but things change when two amorous hippie girls take Timothy for a sail on the sea of love. Timothy goes middle-aged crazy, making a spectacle of himself in hippie clothes as he tries to fit into the swinging scene. Nude dips in the ocean are followed and preceded by wild parties as he tries to recapture the days of his flaming youth. After he feels remorse and embarrassment over his behavior, he calls on his wife to join him at the convention to rekindle their love in this lowbrow comedy. The British rock group The Pretty Things provides the music.
James Stewart plays aeronautical engineer Theodore Honey, the quintessential absent-minded professor: eccentric, forgetful, but brilliant. His studies show that the aircraft being manufactured by his employer has a subtle but deadly design flaw that manifests itself only after the aircraft has flown a certain number of hours. En route to a crash site to prove his theory, Honey discovers that he is aboard a plane rapidly approaching his predicted deadline.