As Hiccup became Berk's new chief, a great danger pushes him to leave his native isle to go find a mysterious world. Throughout this journey, Hiccup's relationship with his dragon, Toothless, and his girlfriend, Astrid, will be put to the test. However, Hiccup will come out grown up. Possible HTTYD3 based on Annecy and TIFF clips but more romantic. Hiccstrid.