Trouble is brewing in the Creature World as the sinister Shadow Creatures, led by the despot Lord Vengeance, stake their claim as the most feared Creature type by violently taking over entire landscapes of the Creature World and sowing the seeds for all-out war for control over the world! Meanwhile, on Primus Island in the human world, Jake Adams, his brother Steven, and many other Battlists partake in an island-wide challenge to become the first-ever champion of the Primus Battle League.