Holly O'Hair!

She's 16 years old, she is the daughter of Rupunzel. Best friends or more like brother and sister.. Ben. Who is gonna be king next month, on his first proclamation is to give five selected children from the isle of the Lost the chance to live in Auradon, away from the influence of their villainous parents; Carlos, son of Cruella de vil; Jay, son of Jafar; Evie, daughter of the Evil Queen; Kaden, son of Mother Gothel; Mal, daughter of Maleficent.

On the island, Maleficent instructs the quartet to steal the Fairy Godmother's magic wand to release the barrier so she can take over Auradon.

Traveling to Auradon Prep, the five meet Ben, And his sort of sister; Princess Holly O' Hair!! Shes the daughter of Rupunzel! Or yeah, and his self-proclaimed girlfriend Audrey, daughter of Princess Aurora and Prince Phillip.

They also meet the Fairy Godmother, the school's headmistress. Evie uses her mother's pocket-sized magic mirror to locate the wand in a nearby museum, and Mal uses her mother's spinning wheel from the museum to put the security guard to sleep, but they fail to steal the wand due to a barrier around it. After learning that the Fairy Godmother will use the wand at Ben's coronation, the five wait it out by attending classes, but start to fit in with the students. Jay and Kaden is recruited into the school's "tourney" team (a sport similar to field hockey and lacrosse), while Carlos overcomes his fear of dogs by befriending the school's dog, Dude. Evie, though intelligent, acts vain to impress Chad, Cinderella's son, but ends up doing his homework for him. Dopey's son, Doug, encourages her not to pander to others and be herself.

Mal becomes popular, using Maleficent's spell book to improve the looks of Jane and Lonnie, the daughters of the Fairy Godmother and Mulan, respectively. Learning that Ben and Holly's girl-boyfriend will be seated close to the wand during the coronation, which is used during the ceremony, Mal bakes a cookie laced with a love potion and gives it to Ben and Holly, who will  fall madly in love with Mal and Kaden, much to his friends' shock.

On a date with Ben and Holly, Mal and Kaden becomes conflicted with her inner goodness and desire to please there mother's, unsure of how to react to Ben and Holly's feelings towards them. During the school's family day, the villains' children are ostracized after an encounter with Audrey's grandmother, Queen Leah, saying that Maleficent's curse was the reason she missed Aurora's childhood, prompting an argument that drives Mal to end the beauty spell she used on Jane. While Ben and Holly  tries to reassure them that everything will be okay after the coronation, Doug tried to remain friendly towards Evie, but Chad forced him to distance himself from her.
At Ben and Holly's coronation, Mal and Kaden gives them a brownie containing the love spell's antidote, believing it is unnecessary to keep them under the spell. It turns out,  Ben and Holly admission, that they was already freed of the spell since their date when they went swimming in the Enchanted Lake, believing that Mal and Kaden only did it because they really liked them. During Ben and Holly's  crowning, a disillusioned Jane grabs the wand from her mother, wanting to improve her beauty, only for her to accidentally destroy the Isle's barrier. Mal and Kaden  takes the wand from Jane, but torn over what to do, is encouraged by Ben and Holly to make her own choice rather than follow Maleficent and Mother Gothel's path. Mal and Kaden recognizes that they and there friends found happiness in Auradon, and they choose to be good.

Maleficent and Mother Gothel, crashes the ceremony, freezing everyone except herself and the six children. Some how, Holly wasn't frozen.. why? Is there a secret between her and the villains kids.

When they defy them, Maleficent transforms into a dragon.. and Mother Gothel was about to get away until, ken and Jay grabbed her.

Mal, Kaden and there friends use a counterspell, turning Maleficent into a lizard based on the amount of love in her heart. Mal and Kaden returns the Fairy Godmother her wand as she unfreezes everyone and tells her not to be hard on Jane. While the villains watch the celebration from afar, Auradon Prep's students party through the night. Mal's eyes turn green as she addresses the audience, telling them the story is not over yet.