A spin-off of THE iDOLM@STER Cinderella Girls set in a different canon, it features almost all of the younger idols under 12 years old (as the title implies, who are under 149cm in height) of the series and a new, short producer.

It's time to pull back the curtain on a new Cinderella Girls story. Hardworking girls and up-and-coming producers team up to shoot for the stars and become the next big idol. Between their gorgeous outfits, electrifying performances, and distractingly handsome princes, these aspiring idols have a lot to deal with.—MAL News

THE IDOLM@STER Cinderella Girls U149 is a spin-off of THE iDOLM@STER Cinderella Girls based off the manga of the same name written and illustrated by Kyowno. Set in a different Cinderella Girls canon,it features almost all of the younger idols under 12 years old (as the title implies, who are under 149cm of height) of the series and a new, short producer.—Milton W.

When the president of 364 Productions forms the Third Entertainment Division, he decides to have it mainly focus on the agency's younger idols who are still in elementary school. With the veteran producers reluctant to get involved with such an unconventional unit, a newly promoted Producer is assigned to manage the division. With this unfamiliar situation thrust upon him, the Producer decides to create a stage for his idols that nobody as seen before.

The U149 in the title refers to the aspiring idols at the center of it all: These small girls are ready to make it big. All under 149 centimeters tall, this group of aspiring pop idols dream of performing for thousands of people. But with zero experience, they've got a lot of work to do. Not to mention there's a distractingly cute prince in town. With the help of their rookie producer, who's just as short, can they stay focused and make it to the top?—Crunchyroll