In a city now devoid of people, Boar, with light machine guns akimbo heads towards a central building. As she enters the building, she reminisces about how she became the family’s contender in the Zodiac Tournament. At the top, she sees the other contenders, although one, the Snake, is already dead. The mysterious referee appears and tells them to swallow the gems of the tournament, containing a poison that will kill them in 12 hours...