The victory over the Mandalorians came with a price, and many sacrifices had to be made to stop them. But they didn't end in the skies of Malachor V. Instead of peace, Revan's return to the Known Space brought another war, more devastating than the previous one. Seeing this as the darkness they have foreseen, the Jedi fought back. But the truth was something they didn't consider.

With the dragon training nearly complete, Hiccup leaves Berk, knowing that he couldn't bring himself to kill the Monstrous Nightmare. After 10 years, rumours of a tribe of Dragon Riders reach Berk that was being devastated by the dragon raids. Seeing this as their only option of survival, a small group from Berk travels to find the mysterious tribe and their chief - Dragon Master.