A new heroic dragon and rider are taking to the skies and only you can help them defeat the evil villains who destroyed a dragon sanctuary created by Hiccup and Toothless.

When the island of Havenholme is found in ruins, mysterious survivors emerge as unlikely future heroes. Scribbler is a scholar who cannot remember his past while Patch is a unique breed of dragon, a "chimeragon," who harnesses new, unexpected powers they both discover along the way. Together they must explore new islands, battle fierce enemies, and piece together lost memories that will reveal the strange truth about Patch's origin and why the villain, Eir, will stop at nothing to recapture him.