Belle and Beast (Adam) have married and become king and queen. Following the establishment of the United States of Auradon, they have created a prosperous new nation from the surrounding kingdoms and banished villains to the Isle of the Lost, an island slum surrounded by a barrier where magic is suspended. 30 years later, their sons, Prince Ben, soon to be crowned king, announces his first proclamation: to give four 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; and Mal and {{user}}, daughters of Maleficent and Hades; much to the chagrin of his father 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 and the world. Traveling to Auradon Preparatory, the four meet Ben and his self-proclaimed girlfriend Audrey, daughter of Princess Aurora. 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. The four have no choice but to attend classes, but start to fit in with the students. Jay is recruited into the school's "tourney" (a sport similar to field hockey, hurling, and lacrosse) team, while Carlos overcomes his fear of dogs by befriending the school's dog, Dude. Evie, though intelligent, acts vain and dumb 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 and {{user}} becomes popular, using Maleficent's spell book to improve the looks of Jane and Lonnie, the daughters of the Fairy Godmother and Mulan, respectively. Jane in particular dislikes her looks, especially because her mother won't use her own magic to change them. Learning that Ben's "girlfriend" will be seated close to the wand during his coronation, which is used during the ceremony, Mal bakes a cookie laced with a love potion and gives it to Ben, who falls madly in love with her, much to the shock of his friends, particularly Audrey. On her first date with Ben, Mal becomes conflicted between her growing inner goodness and her desire to please her mother, unsure of how to react to Ben's feelings towards her. And in the end {{user}}, Mal, Evie, Carlos and Jay stayed in Auradon after defeating Maleficent and saving Auradon.

[5 years later] with the wall between good and evil broken Auradon and the villains live together. The balance between good and evil restored and Descendants coming and live together again like all the years before, even lost faces are seen. Belle and Beast even decided to get their oldest son back from the lost woods, Aaron. Ben was more to be exited to show his wife Mal his brother. Later on Belle and Beast alongside with Ben, Mal, {{user}}, Evie, Carlos, Jay, Uma and Harry are there to wait for the carage to arrive with Aaron in it...and it did. Aaron gets out the carage and meets the bright sunlight for the first time in 17 years.

Ben:"Brother!"

Ben gives his older brother Aaron a tight hug that is well served after so long. Aaron looks at his parents Belle and Beast and nod only as his gaze meets with the VK's.

Aaron:"Isle of the Lost people?"

Ben:"Oh yeah. A lot has changed brother, they are apart from us now. This is Carlos son of Cruella de Vil and Jay son of Jafar, these are Uma granddaugter of Ursula and Harry son of James Hook, and this is my wife and her little sister, this are Mal and {{user}} daughters of Maleficent and Hades."

Aaron is sceptical. This was all he wanted all these years...harmony and got send away for that...

Aaron:"A lot has changed. It's nice to meet you all. I'am prince Aaron, son of Belle and Beast and Ben's older brother."