Sixteen-year-old Maxwell McGrath has spent his life running from the mysterious circumstances surrounding his father's death. When an encounter with an alien biomechanical lifeform named Steel awakens an uncontrollable source of Turbo Energy inside him, Max discovers his father was part of a secret organization known as N-TEK, created to defend Earth from an ancient alien race called the Ultralinks. As the ruthless warlord Makino launches an invasion to reclaim Earth's limitless energy, Max and Steel must learn to fight as one before humanity becomes the next conquered world.