Jack Frost and Elsa of Arendelle go to high school. Note: I found the picture on the cover on the Internet, all I did was add the title and my username.

'SOPHIE!!!!!' Jamie screams. I look to Sophie to see her unconcious and with a deadly wound laying on the floor. 'Get her of the battlefield and wrap something around that wound!' Anna yells. 'We'll cure her as soon as possible!' Jamie nods and does what is told him to do. 'Haha, you lost someone!' Pitch laughs evil. I make a move with my hand, freezing Hans' heart. Another move. I froze his head this time. He falls unconcious but the Nightmares and Pitch don't stop fighting. On her way to a party, Elsa meets Jack. He tells her they need her help. They are the Guardians, and they need her help because Pitch is back. But that is not the only problem. Also Hans returns, wanting revenge on the royal sisters. And that's not even everything yet...

Elsa has just ended the eternal winter in Arendelle and has come back into ruling the kingdom. But when things have just felt like they had settled down, a new terror of darkness has threatened Arendelle and Elsa. The king of darkness and nightmares, Pitch and he wants Elsa all for himself. He threatens if he doesn't have her, he will send darkness over Arendelle and will send it into total chaos. Not knowing what to do, Elsa ask Manny (the man in the moon and her childhood friend) what she should do. He tells her to go to the North Pole, to speak to the guardians, that's when she meets Jack. At first Jack, is cold to Elsa for some strange reason, but when Pitch tries his many attempts to capture her, Jack is the first one there to keep her safe. Also the more nightmares Pitch puts in Elsa's head, the more she remembers about the time she froze Arendelle and the more she's losing control of her powers. Will they be able to save Arendelle and stop Pitch? Will Elsa get a hold of her powers again? Will Jack save Elsa or will she be taken...to the dark side?