Hikari, who works as an undercover agent with her husband, is infiltrating the casino that the organization uses as a hideout to expose its dark secrets. Hikari poses as a customer and waits for contact with Takeda, a senior member of the organization. Her husband, disguised as a waiter, is nearby, watching the situation. After some time has passed since the game started, the target Takeda contacts Hikari. Takeda wants to play the game for the night, so Hikari accepts the gamble and purposely loses in an attempt to extract information, but Takeda knows that Hikari is an undercover agent...