Shomuni

Everyone's favorite TV superhero Action Mask shows up in Kasukabe, and he's trying to get something from Shin-chan -- but what could it be?

Something sinister's afoot in Kasukabe. Shin-chan doesn't know what it is, but he's pretty sure it involves samba-dancing doppelgängers.

Miss Kobayashi, Tohru, Ilulu, and Kanna’s peaceful lives are shaken when Kanna’s father, Kimun Kamui, forces her to return to the Dragon World. As a war brews between the Chaos and Harmony factions, Kanna tries to unite the two worlds, torn between her friends and father. When dragons clash, Ilulu uncovers a hidden force manipulating the war. Can they stop the war before it consumes both worlds?

The Straw Hats visit a recreational island, run by Baron Omatsuri, who asks them to complete a series of ordeals if they wish to stay on the island. Luffy accepts and the Straw Hats work together to complete them, but as the island's mysteries unfold, their lives and friendships are put to the test. It's up to Luffy to stop the Baron's plot and keep his crew together.