A young engineer is sent to post-WWII Berlin to help the Americans in spying on the Russians. In a time and place where discretion is still a man’s best friend, he falls in love with a mysterious woman who will take him on the dark side of evil.
Cupid, the God of love, gets the order to unite two people. On Earth, Otto fails as a street musician because his guitar breaks. While buying a new string, his hand gets stuck in the purse of Tina, who works at the Dr. Bayerle beauty farm. When she enters the subway, the purse is teared off and Otto is hit by Cupid's arrow. Now he wants to give back her purse at the doctor's conference.
East Friesian Otto moves to the big city Hamburg. There he gets into trouble with a loan shark and needs to find a way to impress his love interest Silvia.