Rise of the Brave Tangled Dragons - The Big Four

The Big Four meet because Pitch is back, stronger and is now planning on destroying Jack Frost and the Guardians...
The Big Four:
Merida - Summer
Rapunzel - Spring
Jack - Winter
Hiccup - Fall
At first the four teenagers didn't go well together but after being together and knowing more about each other they became the best of friends, and maybe grow more than friends...
And in a mater of weeks or months Pitch finds new recruits, which are the fears of the other 3 new teenage guardians.