Hogwarts' new heroes

Three years after the Battle of Hogwarts, they finally finished rebuilding the school, even with magic.
Merida, Rapunzel, Hiccup, and Jackson (who were third years when the war happened) are back for their sixth year.
Merida: She now has mended her relationship with her mother and is extremely happy
Rapunzel: She's become a princess, and is happily reunited with her parents.
Hiccup: He has become chief, and is getting over the death of his mother.
Jackson: He goes by Jack Frost now, and he doesn't remember next to anything past two winters ago.

And now another might join them, Queen Elsa. She's joining Hogwarts, at year six, whit her sister Ana, not long after the Great Freezing.

But a new danger is rising. These five will have to fight their biggest fears, because an extremely powerful wizard called the Nightmare King, and this time, Harry Potter isn't the one who's capable of taking him down.

So it's time to meet Hogwarts' new Heroes.

A/N: Yea, I only own the story line, yada yada yada, do I really need to tell you I don't own this?