At the prestigious Budokan venue, the Tsukino Concert annually showcases the top idol units of Tsukino Entertainment Production. The leaders of SolidS, SOARA, QUELL, and Growth face the task of composing distinct songs for their groups to perform on the festival's second day. Shiki Takamura, leading SolidS, grapples with a creative block in crafting these crucial songs. Sora Oohara of SOARA must confront his past errors to elevate his unit's success. Meanwhile, ex-pop idol Shuu Izumi strives to elevate QUELL to new heights, aiming to outshine his prior group's fame. Growth's Kouki Etou reluctantly collaborates with rival group ZIX before their debut, posing a challenge to their unity. Tsukipro The Animation intricately weaves together the daily struggles and aspirations of these four units as they prepare for the grand Tsukino Concert.