In 2525 mankind began to colonize space. And the planet is invaded by an unknown alien race, and a group of cadets trying to save the planet. This crew is Thomas Laskey, who has doubts about his abilities. Laskey and colleagues are rescued his team by John-117, one of the super soldiers of the UNSC Spartan-II’s. And John is supposed to inspire Laskey to regain confidence and to save mankind from a very powerful enemy.