The game starts out with the Robotech Expeditionary Force returning to Earth and fighting the Invid Forces. One of the ships crashes on Earth and the crew begins fighting the Invid close to one of their hives. One member of the crew (the main character) makes a mad dash on foot to assault the hive but is knocked out by an Invid Trooper. Four years pass and humanity is still fighting the Invid. The member that was knocked out wakes up with no memory in the rear of a truck being driven by soldiers, he then dons the name Locke by taking the armor of a fallen soldier that went by that name. Then meets up with squad leader, Silas and his partner Arturo. With the squad low on ammo, Locke looks for Sam, a member that is guarding protoculture ammo reserves. After Locke needs his cyclone repaired he meets Guppy, who repairs his cyclone and tells him to meet her in a Town called Greystone. Soon after they find an abandoned ship and replenish their equipment. Finally (and after various skirmishes with the Invid and other hostile humans) they head on to Reflex Point, where the final attack on the Invid Invaders is set to take place at the end of the game.
