In Arenberk High-school The Big Four is the popular group, consisting of Jack Frost, Rapunzel Corona, Merida Dunbroch and Hiccup Horrendous Haddock III. A new girl comes to their school Elsa Arendelle. She's shy and reserved and seems to shut out people. But the gang feel Elsa has a secret. Now the Four bring the new girl into their group in hopes to find out the truth and secrets behind Elsa Arendelle. Second Book: Keeping A Promise

Elsa had just given birth to Asher and is doing fine. Elsa and Hiccup have never been happier. But when Hiccup's father butts into his son's life, and Hiccup loses all faith in himself, things get harder than before. Elsa's fears grow as more of the bad comes rather than the good. She fears Hiccup will fall under the good being of their son and pressure of his sudden responsibility. Book 1: The Mystery Behind The New Girl Book 2: Keeping A Promise Book 3: Bring Me Back To Life Book 4: All I Need is Luck

Ever since Elsa bumped into Hiccup on the first day of school, the two have been close friends. Elsa has revealed her powers to Hiccup and he's kept it a secret since. Jack's been somewhat cast out of the group but still talks to Rapunzel and Merida. Hiccup's still madly in love with Elsa, as she is with him. He had made a promise to always be with her no matter where life takes them. New troubles come for the two making life instantly harder, making Hiccup's promise harder and harder. Third Book: Bring Me Back To Life