Grape Girl suffers from uncontrollable gas that releases blue clouds, causing chaos at school, on the subway, in the streets, and at home. Her parents collapse, and she is arrested, tried, and banished to space. On the spacecraft, she discovers her gas is an infinite clean energy source. Aliens try to capture her, but she defeats them. Later, an alien commander betrays his leader and uses her power to target Earth. She escapes, helps stop the weapon, saves the alien mothership, and earns the alien leader’s respect. Earth and the aliens form a peace and energy partnership.
Back home, she is celebrated as a hero but is over-drained by an energy station and collapses. Scientists discover small doses are safe and her power regenerates. She learns to control and aim her gas. A new red alien fleet invades for the energy. Grape Girl fights with Earth and alien allies, destroys the enemy mothership, and wins. A peace treaty is signed, and she becomes Energy Ambassador. She accepts her power, helps power the city safely, and reunites with her parents. In the finale, she releases blue gas into the night sky, turning it into blue starlight, and the city celebrates her. The story is about self-acceptance, turning shame into strength, peace, and using one’s gifts to help others.