[Machine Translation] Late at night, alone in bed, your voice was the only thing that saved me. I want to talk to you again. I have something to say. Arisu Yamabuki, a sophomore in high school, was looking for a girl named "Apollo," a radio broadcaster whose face and real name she did not know. One day, however, Arisu finds a clue about Apollo in the broadcasting club of the high school she is going to. There she finds four beautiful girls who dream of working in the voice business. On the last night of the school trip, Iko sneaks out of the hotel and goes to see her former classmate from elementary school, but he seems to have been through a lot in the past...? Worried about Iko, Yamabuki, Rokka, Shinobu, and Nene also escape from the hotel in their slippers! What happened to Iko when she arrived at the hotel? Rokka returns from her school trip and decides to write the debut song for the band she and Hizumi plan to form! However, the song is rejected by the professional-minded Hizumi, and the competitive Rokka's heart catches on fire!