In a world populated by cephalopod hybrids, a beloved game called the Turf Battle exists, where two teams of four compete to cover the most area in an arena with their ink. As Haikara City kicks off the coveted CoroCoro Cup, four squid friends form a team despite their middling ranks: the carefree Goggles-kun with his Splashooter Collab, the level-headed Headphones-chan with her Squicklean alpha, the ever-jubilant Knit Cap-chan with her Bucket Slosher, and the stern Megane-kun with his Hokusai. As expected in a competitive tournament, the four squids representing Team Blue encounter many skilled adversaries on opposing teams, such as their first opponent, the S+ ranked Roller user Rider. Despite this, Team Blue strives to overcome the odds and make their mark in the tournament—and perhaps on their rivals as well.