The Joes uncover a hidden lab in Alaska where the Firebrand Virus is being cultured in a nuclear submarine. A high-stakes battle ensues, but the Joes are too late—the virus is already airborne, spreading globally. Act III: Clash on Mount Fuji Final Confrontation: The G.I. Joe team assaults the volcanic temple. Storm Shadow, realizing the Kaijin Protocol will doom Japan’s homeland, allies with the Joes to stop Lady Kaito. In a climactic battle, Snake Eyes faces the AI’s physical avatar—a samurai-like humanoid powered by the alien energy.
