Hiccup is excited to celebrate the upcoming Winter Holiday with Toothless for the first time! When the Berk Dragons unexpectedly migrate and leave Toothless behind, Hiccup builds him a new tail that lets him fly on his own! As the days pass without Toothless at his side, Hiccup grows restless and sets out to find where the dragons have gone: an island where the dragons hatch adorable babies from explosive eggs! But back on Berk, the teens uncover a hidden nest of eggs and when they start to explode, the houses and decorations are destroyed. There is nothing left of the holiday to celebrate. All is well when the Dragons return and everyone discover the real meaning of the holiday season, friendship!