After Shiny Colors' first concert goes well, Mano Sakuragi and her friends at 283 Production keep running into new challenges. Once the new unit Straylight holds its debut concert, members of the agency's units are temporarily split into new groups to prepare for a Halloween event, a plan meant to help each idol grow on her own. Mano has trouble putting her ideas into words, while her unit mate Hiori Kazano feels outclassed by the talent of her new teammates. Meanwhile Fuyuko Mayuzumi, still stung by losing the center spot in Straylight, cannot let her true self show, and that puts the whole project at risk. The producer must help Fuyuko open up if the units are to shine again. The season is a music series of 12 episodes, first screened in theaters in three parts before its TV broadcast in fall 2024.