Tsubasa Misudachi's quiet life is upended when a massive UFO crashes in the countryside near Nagaoka, Japan. The Gatchaman team, responsible for protecting Tachikawa City, takes charge as a peaceful alien being emerges from the wreckage. Amid the chaos, Tsubasa receives an advanced technological notebook called a NOTE from J.J. Robinson, the founder of Gatchaman, marking her sudden recruitment into the team. With Hajime Ichinose guiding her as a mentor, Tsubasa gradually adapts to her role as a defender of justice.
Meanwhile, CROWDS technology, which allows people to manifest their consciousness into physical forms, gains widespread popularity with the endorsement of Prime Minister Sugayama. However, a secret group called VAPE becomes notorious for using distinctive red CROWDS to cause destruction, leading to a decline in public support for the technology. With Tsubasa now part of the Gatchaman, they must stop VAPE's malicious plans before disaster strikes.