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Falulu is far away in the heart of the PriPara world in Puransu. The sparkle is disappearing from the idol sacred ground PriPara, and Falulu sends an SOS message to Laala and her friends. If the sparkle doesn't return, the PriPara world itself will disappear. Laala and her friends try to help Falulu, and they work together to save the PriPara world.
The anime will take place not in space (uchuu), but in "Puchuu," and will feature the first "Puchuu tour" in PriPara history. The PriPara idols will tour the solar system and will discover new wonders. Various trials await the idols, and things aren't straight forward. Will the idols be able to make it back to Earth safely?
Girl band Hello, Happy World! preforms their energetic song "Kimi ga Inakucha".
Although μ’s, the defending champions of the school idol tournament, plans to dissolve their group after the graduation of their senior members, they receive news that leads them to holding a concert event! The 9 girls continue to learn and grow in this new and unfamiliar world. What is the last thing that these girls can do as school idols? With the clock ticking, what kind of meaning will the μ’s members find in performing the most exciting live performance?