Lee Cross, an immortal being tasked with maintaining the fabric of reality, attempts a quiet retirement in a small South Carolina town, only to discover it's a weak point where the primordial Void is seeping through. To protect the town and its residents—including a psychic boy, Eli, and his fierce sister, Jess—Lee must reclaim his ancient power and forgotten purpose, uniting a found family of misfits to battle Mordecai, a powerful agent of the Void who seeks to erase the town and its people from existence.