Yui Yumekawa is a sixth grade boarding student at Avocado Private Academy where BoyPara, boys who are idols, is very popular. She loves to daydream about becoming an PriPara idol also called Delusion Time which causes her to be late occasionally. When she is running late to class, she sees a Prism Stone shop opening up. When she is looking at the Prism Stone store, Laala Manaka, who is a Divine Idol in season 3 of PriPara, collides into Yui. The Principal Babaria introduces Laala as the new transfer student. Yui thinks Laala is joking that she is a Divine Idol from SoLaMi SMILE. After class, she goes to the new store, where she meets Laala. They both enter the gate, unfortunately Laala can't PriPara Change, looking the same age in her new school, due to running into Yui and bending her PriTicket. When they enter into Paparajuku PriPara, they get Idol Watches which they have to max up all way to get a performance. Then Yui meets the mascot Punicorn which becomes her manager and max out her Idol Watch. Then she performs a three-minute performance on stage, using a pre-made making drama which Mirei and Laala did in season 1, the very first performance in Paparajuku. After the performance, Laala and Yui become roommates after running into the dorm before 5:00 due to Principal Babaria strict dorm rule where they trade Friend Tickets.