Tom Rehberg is acting as a special agent in Berlin’s redlight district. Together with his assistant Oliver they shadow erotic-queen Diana Monte, owner of ‘Diana Entertainment’, since they believe she runs an illegal child-prostitution ring that’s covered by her legal erotic internet-site. Using a codeword, Tom arranges a meeting with one of the underage girls. He chooses the brothel Cupido to meet at. The Cupido is owned by Maren , the best friend of Tom’s girlfriend Anna. After the horrible experiences Maren has had as a prostitute, she decided to shelter other prostitutes in her Cupido and give them real work-contracts. Tom waits for the girl in vain – it looks like his investigation has come to naught. His old friend and colleague Werner Horn puts him on the trail of an Ukrainian slave trader named Gerassim. Tom shadows him and notices a meeting between him and Maren in a shack. Before he can even intervene, the shack explodes.