Nao accidentally witnessed her company president being threatened by a man. The man's name is Sugihara. Apparently, the president was taken by a client to a cabaret club run by Sugihara, where he was falsely accused of committing lewd acts against an employee and is now being demanded compensation.
Meanwhile, Sugihara, who came again to demand money from the president, set his eyes on Nao who happened to be there...