In the Viking Age in Norway, sisters Snöfrid and White-Star have taken different paths in life. Snöfrid is a witch and medium to the Gods, while White-Star has turned into an outlaw Viking. After White-Star kills the son of the king during a battle, the insane Queen Gunhild gives Snöfrid an ultimatum: the queen will have Snöfrid's husband killed, unless Snöfrid assassinates her own sister.

Hiccup is a Viking teenager who aspires to hunt dragons, but doesn't exactly fit in with his tribe's longstanding tradition of heroic dragon slayers. His world gets turned upside down when he encounters a dragon that challenges him and his fellow Vikings to see the world from an entirely different point of view.

"When Hiccup and Toothless discover a secret ice cave with wild dragons and a mysterious Dragon Rider, the two friends find themselves in an epic battle to save the future of man and dragons"--Container.