40 PTS What is the theme of Worlds Collide by Chris Colfer? Please help! and can you explain as well then i will award brainliest

Conner and Alex must brave the impossible. All of the Land of Stories fairy tale characters—heroes and villains—are no longer confined within their world. With mayhem brewing in the Big Apple, Conner and Alex will have to win their biggest battle yet. After a prologue in which Conner, now 80 years old, is celebrating his birthday at a bookstore, and realises he doesn't know what happened to Alex, he begins reading his last book. The story starts with Alex, still under the witches' control, wreaking havoc at the New York Public Library. Conner realizes this and sets out to New York City accompanied by Red, Jack, Goldilocks, and Bree. There are a few mishaps at the airport, such as Red buying a mirror at a gift shop, but they get on the plane safely. When they arrive, the Book Huggers, sitting in a restaurant, see Conner and tell their parents. However, Conner ducks and the parents don't see him. Then as Conner's group attempts to make it into the library, a homeless man who had helped them earlier for money leads them to a subway tunnel that was abandoned in the '20s and heads directly under the library. While there, they hear from other homeless people and realize a portal between the worlds is going to open up in the library. They break into the library and see Alex, currently under Morina's control, and the witch keeps them quiet. While sleeping, Conner gets a message from Alex saying that she wants him to kill her so she can "return to magic" and break free from the curse.

THE THEME IS UNITY AND BRAVERY

EXPLANATION:

The Book Huggers rescue Conner and the gang. Meanwhile, Alex is causing more chaos against her will. After the Literary Army was destroyed, Conner wrote a story, where he and Alex never explored the Land of Stories. Alex is not affected by the curse in the story, and they see their father. Alex then gets emotional to the point the curse disintegrates and they leave just in time before the story ended. They then repair New York and a week later, met the president. They explain to her to safeguard the Land of Stories book to ensure a catastrophe never happens again like that of the Literary Army. The series ends with 65 years later where Conner, now 80, is going to be relocated to a retirement home because his children believe he is crazy. His granddaughter Charlotte “Charlie” Black visits him as he is about to visit his sister, Alex. He then exits to the Fairy Tale world. The series ends with Charlie hearing a sound and going to the attic and seeing the Land of Stories book shine. After all that has happened, Alex and Conner meet back together, safe and sound.

BRAINLIEST PLEASE? I REALLY WANNA BE THAT AT LEAST ONCE ONLINE IF NOT IN REAL LIFE

it is the : d because is true