Newlyweds Nana and Shota move into a condo. A residents meeting leads to a terrifying game of murder involving Nana and Shota.
The game started as a joke among the residents, but that night, the manager of the condo falls to his death from the rooftop. And a paper with the word "Manager" written on it is found on the bulletin board later.
Yamagiwa, whom Fujii wished dead, is murdered, and Fujii receives a threatening letter. A special residents meeting is held to discuss who sent the threatening letters. The residents start developing suspicions about each other.
The manager at Xinyi's work dies in an explosion caused by a gas leak. The residents argue about whether or not there really is a swap murder game going on.
