"BanG Dream! Girls Band Party! Pico Fever!" is a short-form anime series that serves as a spin-off of the "BanG Dream!" multimedia franchise. The series features the characters from the mobile game "BanG Dream! Girls Band Party!" in a chibi-style format, offering lighthearted and comedic vignettes centered around the daily lives and interactions of the various bands and their members. The narrative does not follow a continuous plot but instead presents standalone episodes that highlight the quirky personalities and dynamics of the characters.

The series includes characters from all the bands featured in the franchise, such as Poppin'Party, Afterglow, Pastel＊Palettes, Roselia, Hello, Happy World!, RAISE A SUILEN, and Morfonica. Each episode typically focuses on a specific group or a mix of characters from different bands, showcasing their humorous and often exaggerated antics. The interactions often revolve around themes like friendship, music, and the challenges of balancing school life with their passion for performing.

For example, Poppin'Party members Kasumi Toyama, Tae Hanazono, Rimi Ushigome, Saaya Yamabuki, and Arisa Ichigaya are frequently seen engaging in playful banter or preparing for performances. Roselia, known for their serious demeanor, is often portrayed in comedic situations that contrast with their usual intensity. Hello, Happy World! brings their signature cheerful and chaotic energy, while Afterglow and Pastel＊Palettes explore their unique group dynamics. RAISE A SUILEN and Morfonica, the newer additions to the franchise, also feature prominently, blending their distinct styles into the mix.

The series emphasizes humor and camaraderie, with no overarching conflict or dramatic tension. Instead, it focuses on slice-of-life moments that highlight the bonds between the characters and their shared love for music. The chibi art style enhances the comedic tone, making the series accessible and enjoyable for fans of the franchise. While "BanG Dream! Girls Band Party! Pico Fever!" does not delve deeply into character development or complex storytelling, it serves as a fun and engaging complement to the broader "BanG Dream!" universe, offering fans a lighthearted look at their favorite characters.