Arc9 is a story of unlikely heroes. 9 Cousins accidentally stumble across an artifact that grants them the elemental powers of the deities who created their universe. With god-level power being accidentally and unceremoniously thrown at them, the 9 have some mixed feelings about their new status. Some are thrilled and are ready to act as real life superheroes; while others don't want anything to do with this superpowered nonsense. However, when an ancient enemy resurfaces after eons and threatens the planet, the cousins have to come together to save the world, whether they want to or not.