How to Train Jormundgandr
S8, E1: Tom must learn to emulate Hiccup after discovering a relic that may prove to be the key to success in defeating Jörmungandr, the World Serpent.

S8, E1: Tom must learn to emulate Hiccup after discovering a relic that may prove to be the key to success in defeating Jörmungandr, the World Serpent.