Hiccup has lost everything. Berk was destroyed, the land burned and barren. As the lone human survivor of the tribe he traveled aimlessly, until news from DunBroch. They are under attack by dragons. Feelings of sympathy drove him there and there he will meet the princess. Together they may find a way to save her people and maybe even fall in love.

Time has past since the time of The Great Thaw and Arendelle has become prosperous under the rule of the Snow Queen. But little do they know that the King of the Southern Isles has set his eyes on Arendelle. Whether the royal family of Arendelle lives or dies depends on themselves and even more so on the one that they have forgotten.