Andrea, a quiet engineer, one night takes a drive to try to relax his insomnia. When he arrived near the airport, a beautiful stranger, Diana, fell in terror on the hood, chased by some killers. Thus began the flight of the two; the girl smuggled some wonderful emeralds and has no intention of giving up her booty so Andrea finds himself an accomplice unaware of her escape. Having entrusted the emeralds to a friend, the two go from one ambush to another until the moment they meet Jack, Diana's mature and rich ex-lover afflicted by immobility and moreover with an unbearable wife. There is no time not only to rest but not even to think about insomnia and the good Andrea, already very attracted to the unknown woman, does everything to help her. After negotiations concluded satisfactorily for the ingenious Diana. The two, who now love each other, decide to cut the rope forever.