Tangled

A drop of sunlight falls from the sky and produces a magic flower with healing properties. For centuries, Gothel used the flower to retain her youth, until it is taken by soldiers from the kingdom of Corona and used to save their very ill, pregnant queen. She gives birth to Rapunzel, whose blonde hair contains the flower's magic. At night, Gothel sneaks into the castle and cuts a lock of her hair, but it turns brown and loses its magic. Gothel then abducts Rapunzel and raises her in a hidden tower in the woods, keeping Rapunzel's magic for herself. Each year on Rapunzel's birthday, the king and queen release sky lanterns, hoping they will guide Rapunzel home. Unaware of her royal identity, Rapunzel grows up isolated from the kingdom, believing the tower to be her only safe home.
Growing up, Rapunzel is fascinated by the annual lights. On the eve of her 18th birthday, she asks to leave the tower and investigate them, but Gothel refuses, maintaining her claim that the outside world is too dangerous. Meanwhile, a runaway common thief, Flynn Rider, steals the lost princess's tiara from the palace, betrays the Stabbington brothers, his partners-in-crime, and is pursued by royal guard-horse Maximus. Flynn discovers and takes refuge in Rapunzel's tower, where she knocks him out and hides him. When Gothel berates Rapunzel for mentioning the lanterns again and refuses to let her ever leave the tower, Rapunzel hatches a new plan and asks Gothel for new paint as a gift, sending her on a three-day journey. After hiding Flynn's satchel containing the tiara, Rapunzel strikes a deal with Flynn, promising to return the tiara in exchange for taking her to see the lanterns.
Outdoors for the first time since infancy, Rapunzel experiences conflicting feelings of excitement and guilt. Flynn takes her to the Snuggly Duckling pub, where thugs try to capture the wanted Flynn, but Rapunzel charms them into revealing their softer and friendly sides. When royal guards arrive, the thugs help Rapunzel and Flynn escape. Flynn and Rapunzel become trapped in a fast-flooded cave; believing they will suffocate, Flynn reveals his true name: Eugene Fitzherbert. Rapunzel shows him the magic glow of her hair, revealing a hidden underwater exit, and they escape. Meanwhile, Gothel returns to the empty tower and finds the satchel with the tiara and a wanted poster of Eugene. Inspired by the discovery, Gothel finds the Stabbington brothers and strikes a deal with them to find Rapunzel. That night, Gothel confronts Rapunzel alone and gives her the satchel, telling her to give it to Eugene to test his loyalty.
The next morning, Maximus tracks down Eugene and attempts to arrest him, but Rapunzel convinces them to strike a truce. Rapunzel and Eugene enter the kingdom and attend a festival in honor of the "lost princess". After a day of celebration, they sail onto the lake to watch the release of the lanterns. Rapunzel gives Eugene the tiara, and they confess their mutual love. When Eugene sees the Stabbingtons on the shore, he goes to apologize and offers them the tiara. The brothers tie Eugene up, tricking Rapunzel into thinking he abandoned her. They try to capture Rapunzel, but Gothel stages a rescue by knocking the Stabbingtons out and takes Rapunzel back to the tower.
Eugene is arrested, but Maximus and the pub thugs help him escape. Meanwhile, Rapunzel realizes that she has subconsciously incorporated the kingdom's standard, a golden sun, into her artwork throughout her life. Realizing that she is the "lost princess", Rapunzel confronts and disowns Gothel. Gothel initially denies it, but realizing she cannot fake her love for Rapunzel anymore, she reveals her true nature. Eugene arrives at the tower, but is tricked and stabbed by Gothel with her dagger. Gothel attempts to take the chained and gagged Rapunzel away, but Rapunzel promises she will never stop defying Gothel and attempting to escape, unless Gothel allows her to heal the dying Eugene. Gothel reluctantly agrees, but Eugene, realizing Rapunzel would spend the rest of her life in captivity, cuts off her long hair before she can heal him. Rapunzel's hair turns brown and loses its magic, and a horrified Gothel suddenly ages rapidly before falling from the tower and disintegrating. Eugene apparently dies in Rapunzel's arms, but as a heartbroken Rapunzel mourns Eugene, he is revived and healed by the flower's magic in one of her tears.
Rapunzel and Eugene return to Corona, where Rapunzel is reunited with her birth parents. Eugene is pardoned for his crimes and the kingdom celebrates. Rapunzel and Eugene eventually marry.