High school student Kotono Nagase moves into a dorm with nine other aspiring idols, who quickly realize it takes more than cute choreography and cute outfits to advance in the idol-ranking VENUS program... where the top spot is held by Kotono’s older sister.
Hoshimi Productions' Sunny Peace and Moon Tempest have their debut concert at Hoshimi Festival. Kohei and Mana look back on the day of Mana's debut concert.
Sunny Peace and Moon Tempest start out strong, winning all the concert battles so far. Set to enter the Next Venus Grand Prix, they enjoy a day off before the intensive training kicks off.
Kohei splits up the group, designating Sakura and Kotono as leaders and announces the addition of two new members, Haruko and Rei. Sakura's group struggles with Rei's strict dance practice.
Kotono feels uncomfortable working as a group. When LizNoir shows up at Hoshimi Productions and gives a lesson, it helps everyone come together as a group.
Kohei scouts Mei to join Hoshino Productions and it turns out that she is able to see Mana. Kotono feels resistant to her addition at first, but begins to understand why it was necessary.
Sunny Peace and Moon Tempest make it to the Next Venus Grand Prix finals. Kohei joins Sakura for her regular health check-up at the hospital. Things get complicated when the public points out Sakura's singing sounds exactly like Mana's.
Sunny Peace is up against TRINITYAiLE for the semi-finals. Sunny Peace performs a brand new song with Sakura's new singing style that doesn't sound like Mana's. Van Production's president, Asakura, is revealed to be Rui's father.
Mana's younger sister Kotono and a mysterious girl with Mana's voice, Sakura Kawasaki, passes the audition to sign with Hoshimi Productions. They move into the company dorms to start their path to become idols.