When Liam Anderson returned home early from a business trip, he hoped to surprise his wife. Instead, he discovered her in bed with another man. Reeling from betrayal, Liam drove aimlessly until he found himself in a secluded alley. There, a portal suddenly opened, and an alien named Dorian emerged, pursued by the fearsome Mavlons. Despite his best efforts, Liam couldn’t save the Dorian’s life. In gratitude, the dying alien gifted Liam his life-source, urging him to cultivate its power to defeat the Mavlon War God, who was leading an invasion to annihilate Earth.
Transformed into a hybrid, half-human and half-Dorian, Liam discovered that he could absorb the life-source of the Mavlons he defeated, growing stronger with each victory. As he battled his way through the invading forces, he encountered other hybrids but found himself uniquely powerful. To save humanity, Liam must defeat ten powerful Mavlon Generals and steal their powers before facing the ultimate challenge: the Mavlon War God himself. Earth’s survival hangs in the balance as Liam races against time to master his newfound abilities and become the planet's last hope.