When three strangers, Mishiba Toki, Nakajyo Nobuto, and Saitoh Kazuo, are hired by a business to play in the Bus Game, an illegal dogfight held in full secrecy, they are assigned the team code "Team AAA" (Triple Anonymous). This group of three, who are very different from one another in everything from their living situations to their personalities, must collaborate efficiently without mutually erasing their suspicion of one another or invading each other's privacy. They only have one thing in common: they all require a significant sum of money for their respective circumstances. To collect the money, they must participate in the game, despite the fact that their lives are at jeopardy.