The Ichiban team is fully formed with Sun as Fujiyama Ichiban, Sakura as Sakura Ichiban, and Eric as Ninja Ichiban. They fight Dark Matter, a group of mysterious villains who want to destroy Earth. While the team fights these Dark Monsters, they are also looking for a way to rescue Sun's father, who was kidnapped by Dark Matter. Unbeknownst to Sun, his father is actually working with Dark Matter, creating a powerful new enemy: Dark Ichiban. Sun's father is also working on another dangerous weapon: a doomsday device that has the potential to destroy the Earth. Sun, Sakura, and Eric need to stop Dark Ichiban before Armageddon is unleashed.Why did Sun's father create Dark Ichiban? How will the Ichiban warriors stop Dark Matter? And what is Fujiyama Ichiban Ultimate?