Not every party treats you like a hero—especially when you’re a lowly red mage like Yuke. So, after years of constant ridicule by his A-rank party members, he ditches them. Searching for a new party, he reunites with former students Marina, Silk, and Rain, and joins their group. But on a quest to conquer the world’s greatest dungeon, they become entangled in chaos that threatens the world.

When video creator Angie knocks on the door of the City Hunter detective agency looking for a missing cat, Ryo Saeba and Kaori Makimura think they have a simple case on their hands. But an attempt on Angie's life changes the game, leaving Ryo in the crosshairs of mysterious assassins on the trail of Angel Dust, a military technology capable of creating super soldiers. Under the watchful eye of his adoptive father Kaibara, Ryo will have to deal with a past he has tried to escape for too long.

Depicting fictional storylines of the members of FANTASTICS, the story takes place in a dormitory in Tokyo. Behind-the-scenes at live performances, real-life discussions, alone time, and budding feelings set into motion the unexpected and fake reality of FANTASTICS.