Yui Yumekawa is a sixth grader in Avocado Academy, who daydreams a lot and wishes to become an idol, despite her school forbidding PriPara for students. After receiving her PriTicket, she finds out a new PriPara is opening, and Laala Manaka, the Divine Idol from the previous series, is in town, who also is her roommate in Avocado Academy, having been sent there to continue her Divine Idol duties.

However, Yui does not believe it, as a fold in Laala's PriTicket causes a system bug, leaving Laala unable to carry out PriPara change, and it is only after seeing Laala's idol form in the former's first performance in Paparajuku that Yui is finally convinced.

The upcoming Idol Time Grand Prix is also announced, however, with a lack of visitors, both the competition and the Paparajuku PriPara would be shut down, and so would Laala's job as a Divine Idol. And so, it is up to Laala and Yui to keep a flow of visitors to Paparajuku PriPara, as a number of characters from the original series turn up to help.