The game is based on the Alien universe, and the main heroes are the "Alien Earth Protector", the space hero called "Ben" and the alien called "Vilgax". The player takes the role of a space hero called "Ben", who is a member of special space forces called "Stormguardians", and his main duty is to fight the alien race called "Vilgax".

In the game, the player will first be transported to the spaceship of the heroes, where he will meet his team and his first mission as Earth Defender. The player will then have to fight in several missions. Each mission is based on the concept of different scenarios and will have different objectives.