The thriller is set in the cities of Frankfurt and Cologne, and it tells of a complicated love story that puts the protagonists’ lives in jeopardy. Police officer Robert goes undercover in order to thwart a large-scale dealer. To win his trust, he pretends to be in a relationship with trans woman Leni, but this is very difficult for the homosexual Robert, who is simultaneously attracted to and repelled by her. Of all people, it's the dealer and criminal he has to arrest who helps him discover his true feelings.