The members of Roselia, after enduring countless difficulties, vowed to display their talents at the upcoming FUTURE WORLD FES. As fall arrived, Lisa's skill at composing lyrics had progressed, leading to her personal development. Expressing their unwavering dedication to the future, Yukina and Sayo wrote about the changing foliage in a touching letter. Rinko, driven by the desire to contribute to Roselia's triumph, formulated fresh music. However, Ako, facing a range of obstacles in preparation for the competition, including several contests and tournaments, feared for the band's prospects after the FUTURE WORLD FES. What fate awaits Roselia when the event draws to a close?