Crayon Shin-chan: Fast Asleep! The Great Assault on the Dreaming World!

In a whimsical adventure through the realm of dreams, the Kasukabe Defense Forces team up with the Nohara Family to combat an emerging nightmare. The residents of Kasukabe have recently discovered the ability to manifest their desires into vivid dreams, but their newfound joy quickly turns sinister as the dreamscape morphs into a realm of fears and terrors following a bizarre encounter with a colossal fish.

As chaos unfolds, Shinnosuke Nohara and his friends welcome a new ally, Saki Nubatama, into their ranks. Together, they embark on a mission to unearth the source of this dreamworld crisis. With humor and creativity, the group navigates a landscape filled with fantastical and surreal challenges, striving to restore peace and ensure that dreams remain a playground for imagination rather than a battleground of nightmares.