When Hiccup and Toothless discover an ice cave that is home to hundreds of new wild dragons and the mysterious Dragon Rider, the two friends find themselves at the center of a battle to protect the peace.
Return to the island of Berk, where dragon racing has become the Vikings' new favorite sport. Hiccup, Astid, Snotbakke, Tuffnut and Ruffnut, Fishbone and their dragons now compete against each other in fierce battles.
