When a man claims to be Cupid, he is placed in the care of a psychiatrist who takes him under her wing. Obsessed with his mission on Earth, the man now known as Trevor Hale decides to help a woman find her true love.

Still intrigued with Trevor, wondering who he really is and where he comes from, Claire jumps on the opportunity when she meets a linguist who seems able to tell someone's origins just from his patterns of speech. She introduces him to Trevor, who - of course - cannot resist helping the man when he learns that he is still a virgin.