Four years after the events of SHIROBAKO the series, Musashino Animation has gone through unprecedented changes and things are looking bleak for the studio. One day, Aoi Miyamori is offered a role managing a new theatrical animation project. With only a few months left before the deadline, can MusAni complete the project in its current state? It’s up to Aoi to work alongside both familiar faces and new to finish the project in time!

A mysterious girl named Sakura escaped after her fox friend, Shizuku was arrested. When he managed to escape, she fell to the Human World only to be found by Ichika Usami. Sakura says she is from "Sakuragahara", a world based on ancient Japan that is in danger because a mysterious evil figure named Karasu Tengu has taken over and stolen all the beautiful things in her world. She is also looking for Pretty Cure that represents Sweet, Jewels and Keys. Ichika says that she found the KiraKira PreCure team, which represents sweets. As two Karasu Tengu servants arrived in the human world looking for Sakura, the other members of the KiraKira team were ambushed, only to be saved by Maho Girls PreCure! Team, which represented Jewel and Go! Princess PreCure Team, which represents Key. When they gathered together with Sakura, the three teams had to dare Sakuragahara to save Shizuku and free her world from the evil hands of Karasu Tengu.