This is the fourth movie starring a tiger boy named Shimajiro.

The story begins the day before the graduation ceremony. Five middle school girls each are preoccupied with their real everyday lives. These girls meet each other in a fantasy world after being sent there through a sudden occurrence. There, they learn about the impending crisis that this world is facing. The way to avert this crisis is for the five to collaborate and bring their five hearts together as one through dance. However, the five cannot come to love the world, and cannot tell their true feelings to one another, so their hearts are unable to unite. The time limit is fast approaching. Can the dance of the five girls save the world? And will they be able to graduate?

THE IDOLM@STER 765 MILLIONSTARS HOTCHPOTCH FESTIV@L!! was a two-day concert event that took place on October 7th and 8th, 2017. The concert featured a variety of songs and performers from 765 Production, such as ones from THE iDOLM@STER Million Live!, and took place at the Nippon Budokan Arena in Chiyoda Prefecture, Tokyo. Both days of the concert were filmed and released on Blu-ray in standard separate and limited edition boxset formats on November 21st, 2018.