The exciting second movie of How to Train Your Dragon trilogy takes us back to the fantastic world of Hiccups and Toothless after five years. As Astrid, Snoutlout and the rest of the group compete with each other in dragon races, they embark on inseparable journeys, go to unknown places and explore new worlds. One of their adventures drags them into a hidden ice cave, home of hundreds of wild dragons and the mysterious Dragon Rider. The two friends will find themselves in the middle of a war to maintain peace.