Akane has bought a boardgame from a strange little shop on a street that Nabiki didn't think existed. It seems to be more than slightly perverted, and also more than slightly magical, as all the participants find out. The game set itself up with pieces for all the players and sucked everyone in. Once in, there's no escape, and no cheating either. The only way to get out is to finish, and getting to the finish line is no easy task...