Japan is now an unprecedented audition boom. Meanwhile, a survival program that discovers a new girl group that is a bit different from the conventional audition program is born! The candidate members are 15 Japanese trainees aged 13 to 19 who have been trained by strict K-POP training. They challenged a number of harsh missions that made their debut under the "Legendary Demon Coach". Each time, the debut candidate "Princess team" and the "Challenger team" aiming for Princess are divided, and the member who finally won the position of "Princess" can debut. Only 5 people can make their debut in the end! Draw a real drama of girls struggling to make their debut in fierce competition!