On a bright and sunny summer morning, genius brothers Phineas and Ferb are determined to make the most of their free time by building an incredible spaceship that will take them to explore the universe. Meanwhile, their older sister, Candace, is more obsessed than ever with trying to “catch” her brothers in the act of their creative antics. However, when Phineas and Ferb's ship becomes the key to saving Candace from an evil alien queen, everything takes an unexpected turn.
After being abducted by the queen, Candace finds herself on a distant planet, where she discovers a fascinating world filled with strange creatures and astonishing adventures, but also with potent dangers. Suddenly, she realizes that her true challenge is not just to escape, but also to reunite with her brothers, who are determined to rescue her. Together, they must join forces with inseparable friends like their pet, Perry the platypus, who is living his own secret story as a secret agent, to face the queen and her intergalactic army.
With an explosion of catchy music, overflowing humor, and unexpected twists, the movie transforms a simple quest into an epic family odyssey. Along the way, Candace learns about the importance of family, teamwork, and, above all, that sometimes what you desire most is what you least expect. The adventure is on, and the universe will never be the same again.