Jelee, formerly an idol, was forced to leave the industry after a scandal involving a fellow group member. Seeking a fresh start, she adopts the alias "JELLYFISH" and begins uploading masked singing videos online. In Shibuya, she meets Mahiru, Kiui, and Mei—three young women who have also struggled with their creative passions. Together, they form the anonymous artist group JELLYFISH

As their fame grows, Jelee faces public scrutiny over her past and her strained relationship with her mother, a powerful figure in the industry. Despite challenges, she and her friends support each other, rediscovering their artistic drive. When online threats put their future at risk, they hold a live performance without an audience, turning it into a massive success.

Through this journey, Jelee overcomes her fears, embraces her identity, and forges a new path alongside her friends.