Police detective Kaname Mori goes to the rescue of Hideki Shimizu after seeing him being brutally beaten by a gang of thugs. After taking the young man back to his home to administer medical assistance, Kaname learns that Hideki is not only a host at a local club, but also the son of a Japanese ambassador. After releasing Hideki to his family, Kaname returns to his normal life. But two months later, he receives a call from the ambassador that Hideki has disappeared and he wants to hire Kaname to find him. Straight-laced Kaname goes undercover into the notorious red-light district of Tokyo and enters Haruka, a club swimming in gorgeous male hosts willing to spend time with him for the cost of a bottle of champagne. Will Kaname find Hideki or will he get swept up into the world of desire and sin?