A whirlwind romance between a Danish storeclerk and an American G.I. in Copenhagen takes them to a dance club base for prostitutes, whom she befriends and whose pimp he antagonizes.

The German agent, 503 June Harvey, has caused serious losses to the Danish resistance movement during the occupation, and it is decided to liquidate her. When this is to happen, she is in Stockholm. A new man is sent there to lure her to Denmark, but she prevails over him. The group leader then decides to take care of the matter himself. A young resistance fighter falls in love with her, and it takes great effort for him to carry out the order.