The year is 2307 A.D. The earth is frozen over and virtually uninhabitable. The remaining humans live underground, unable to survive the sub-arctic temperatures. With no “man power,” scientists bio-engineered Humanoids that possess great strength, speed, and tolerance to extreme cold.

A rogue humanoid named ASH-393 escapes from captivity and threatens to lead a humanoid rebellion against mankind. Arizona Federation leader, General Trajan, sends an elite team of Spartan 7 soldiers to hunt down and terminate ASH.