Three strangers, Mishiba Toki, Nakajyo Nobuto, and Saitoh Kazuo, are recruited by a corporation to compete in the Bus Game, a clandestine and illegal dog‑fight. They are assigned the team code “Team AAA” (Triple Anonymous). Despite their vastly different backgrounds and personalities, the trio must cooperate effectively while keeping each other’s private lives out of reach. Their only common ground is that each needs a substantial amount of money for personal reasons. To secure the funds, they must compete in the dangerous game, risking their own lives in the process.