"You won't leave this game until every part of you belongs to me." Sergio Torrente, an Italian businessman, is surprised at who he sees in the surveillance camera. The mysterious person making moves every night against his challenging chess display at the office turns out to be a cleaner clad in a shabby uniform. But how could such a beautiful woman be just a cleaner? Drawn to the mysterious woman, Sergio summons her and declares that she will play a game of chess with him every night, starting this very day!