In this British romance, a lively London lad decides to create a little excitement by dreaming up a convincing story involving the theft of a Rembrandt; he then tells the story to a local newspaper. According to the imaginative imp, the painting was stolen by a motely gang who worked for a powerful South African guerilla leader. Unfortunately for the boy, there is a real Rembrandt thief about, and he is out to get the boy before his lies end up getting the crook captured. Meanwhile, the boy is in love with a pretty girl, about whom he frequently fantasizes. He does get together with the girl for a while, but the she jilts him. Fortunately, by the story's end, the crook is captured, she returns, and happiness ensues.