The game takes place in a world where the diabolical Psychobos, a powerful and malevolent alien entity, has invaded Earth with an army of robotic minions. Ben Tennyson, the protagonist, must use his incredible abilities and arsenal of alien transformations to stop Psychobos and his minions. With the help of his trusted Grandpa Max and cousin Gwen, Ben must travel across the globe to gather allies, master new skills, and unlock the secrets of the mysterious Psychobos.