Aliens are attacking an isolated base on a remote planet from the air and from underground. The only hope in defending the base is an artificial intelligent spacecraft, called Defensa, and a lone security bot, named Hitch. These two defenders must work with their resources and repel the assault on the base.

Aliens are attacking an isolated base on a remote planet from the air and from underground. The only hope in defending the base is an artificial intelligent spacecraft, called Defensa, and a lone security bot, named Hitch. These two defenders must work with their resources and repel the assault on the base.