A genius player steels himself!! "BTOOOM!"--the death game that forces flesh and blood people to kill each other with explosives--charges into its final stage! Ryouta has an unexpected meeting on the island with his former acquaintance Tsuneaki Iida, now one of the masterminds supervising the murderous game for Tyrannos Japan. There, Iida reveals the true nature of this bomb game and proposes a surprising plan to Ryouta!! Then the few remaining players left on the island instigate a final battle to secure their escape. Tougou and Sakamoto, both planning to get off the island with their teams of four, take on Oda in a three-way fight to the death!