In the fourth season of Uta no☆Prince-sama, the six members of ST☆RISH have stunned audiences with their debut as idols. Meanwhile, Nanami Haruka is embarking on her journey as a composer at Saotome Academy's master course. As they strive to become top entertainers, they must overcome challenges posed by peculiar foreign idols and experienced senpais. When an enigmatic "Newcomer Award" arises, the group finds themselves swept into a fierce competition. Soon after, they join Shining Agency and set out to make their mark in the world of entertainment.