Splatfest starts in Inkopolis, a turf war where teams must split up and battle against one another, and the team that inks the most ground will be crowned the winner.
Inside an underground facility connected to the Deepsea Metro subway system, Goggles and Team Blue must pass a series of tests to discover the four "thangs" that will open the door to a fabled Promised Land.
It is the Square King Cup Semifinals and Rider's Team Yellow-Green takes on the team of the undisputed champion, Emperor. Then, Team Blue battles Team Gloves.
As the Inklings gear up for the main round of the Square King Cup, they must prepare to battle teams that are stronger than they are, and even face the player known as Emperor himself.
Team Blue's next opponents in a game of Splat Zones are the Iromaki Rangers. Meanwhile, Team Gloves goes up against the superstrong X-Blood team! And waiting in the wings...the S4 is back.
