BanG Dream! Episode of Roselia I: Promise is a movie that follows the story of the band Roselia, a group of girls who make a promise to achieve their dreams through music. They face various challenges and obstacles as they strive to become successful musicians. This movie focuses on the bond between the band members and their determination to fulfil their promise.

BanG Dream! Episode of Roselia II: Song I am. (2021) follows the journey of the band Roselia as they work towards achieving their dreams. The story explores the challenges and growth of each member, highlighting their determination and passion for music. Through music, the characters navigate various obstacles and strive to create a bond that will help them succeed.