A drama based on actual events: the black market casino "Ultra Violet" is located in the basement of a building in Roppongi. The manager, Yasuki Kanzaki, is the head of the staff, along with Shiho, Shinke, and Yui, whose age is unknown, are working there. On the same day, a popular actor Ryota Yoshida arrives with a gravure idol Hitomi. He plays baccarat with Hamano, a music producer….