When mercenaries seize an offshore platform, an elite commando team recaptures the facility only to uncover a far greater threat. A rogue commander aboard a nuclear submarine is plotting a devastating attack from below. Racing against time, the navy deploys it's most advanced submarine to join forces with the commando squadron on a high-stakes mission to protect the mainland from annihilation. As a fierce battle erupts beneath the surface, they must stop the enemy and prevent a catastrophic war.