"Listen! Hear a tale of mallow-munchers and warriors who answer candy's clarion call! Somewhere in a generic suburb stands Treeheart, a kid-forged sanctuary where generations of tireless tykes have spent their youths making merry, spilling soda, and staving off the shadow of adulthood. One day, these brave warriors find their fun cut short by their nefarious neighbor Grindle, who can no longer tolerate the sounds of mirth seeping into his joyless...

Now chief and ruler of Berk alongside Astrid, Hiccup has created a gloriously chaotic dragon utopia. When the sudden appearance of female Light Fury coincides with the darkest threat their village has ever faced, Hiccup and Toothless must leave the only home they've known, and journey to a hidden world thought only to exist in myth. As their true destinies are revealed, dragon and rider will fight together to protect everything they've grown to treasure....