In the post Nuclear War wasteland era, teenager Kael Lane is expelled by his family to the edge of the quarantine wall. In a desperate situation, he discovers the Spirit Spring Grotto left by his grandfather, where supplies soaked in water expand tenfold. With this special ability, he rises through the Black Market, growing from an erased outcast to the ruler of a supply empire spanning all safe zones, and personally rebuilds a new world on the wasteland.