Satisfied with his investigation of Lala Lai Theatrical Company, Aquamarine Aqua Hoshino shifts his focus from revenge to career growth and becomes a regular on the variety show Dig Deep! Chase the Impawsible. With memories of his mother still lingering in his mind, Aqua cuts contact with Kana Arima, leaving her unable to enjoy the surging popularity of her idol group, B-Komachi. Meanwhile, following the bone-chilling discovery during B-Komachi's recent music video shoot, Aqua's sister, Ruby, resolves to solve the murders of those dearest to her. With the help of another soul still weighed down by Ai Hoshino's untimely demise, Ruby rises through the ranks, using any means necessary to get her way.

Back in middle school, Arisu Yamabuki's only solace in life was a radio show hosted by a girl named Apollo. He used to faithfully tune into the program every night until she abruptly stopped broadcasting entirely. Despite having very few clues about Apollo's identity, Yamabuki has thoroughly investigated her, which eventually led him to enroll in the newly co-ed Furin High School, hoping to find her there. Just as Yamabuki suspected, the broadcasting club's first announcement is made by the familiar voice he admires! Upon entering the club room, however, Yamabuki realizes that his search will not be that easy. The four members—Rikka Inohana, Shinobu Uzuki, Nene Himekawa, and Iko Kirino—all sound like Apollo in different ways. Yamabuki joins the club primarily to find Apollo, but he soon discovers that each girl aspires to pursue her own career with her voice. Seeing that there is a lot of room for improvement, Yamabuki takes it upon himself to help the girls reach their individual goals—but he never stops looking for his favorite Apollo.

With the help of producer Masaya Kaburagi, Aquamarine Aqua Hoshino and Kana Arima have landed the roles of Touki and Tsurugi in Lala Lai Theatrical Company's stage adaptation of the popular manga series Tokyo Blade. Co-starring with them is Aqua's girlfriend, Akane Kurokawa, who plays Touki's fiancée, Princess Saya. Due to the fanbase preferring Tsurugi as Touki's love interest, Saya has made fewer and fewer appearances in the manga, making it difficult for Akane to fully immerse herself in the role. Her struggles are compounded by differences between the play's script and the original work—differences that also frustrate Tokyo Blade's author, Abiko Samejima. Aqua, however, is more concerned with his personal goals than he is with the play. He has only one objective in mind: to grow closer to director Toshirou Kindaichi and find out what he knows about Aqua's mother, Ai.

Experienced voice actor Yasumi Utatane works hard to maintain her image as a pure and innocent idol to please her fans, even as she struggles to find more jobs in the industry. But Yasumi has a secret—she is actually Yumiko Satou, a high school girl who prefers loose clothes and flashy jewelry, a complete contradiction to her false professional persona. As Yasumi, Yumiko is finally offered an exciting opportunity to do a radio program alongside another up-and-coming voice actor she admires: Yuuhi Yuugure. In Yumiko’s eyes, Yuuhi’s cute looks and talented acting embody what a voice actor should be. As soon as they are introduced at the recording studio, however, Yumiko realizes that Yuuhi is actually her gloomy classmate, Chika Watanabe. Together, the pair commit to their radio program and slowly begin to open up. In supporting each other, Yumikoi and Chika gradually learn to be true to themselves.