J-pop boy group BE: FIRST is a 7-member band formed from the audition show "THE FIRST", created by rapper SKY-HI. The group is signed under SKY-HI`s management company BMSG and made their debut in November 2021 in BMSG`s label B-ME. The film centres around their first Japan tour and their musical journeys, from their time on the audition programme, to live performances around the country.