Five years have passed since Hiccup and Toothless united the dragons and Vikings of Berk. Now, they spend their time charting unmapped territories. During one of their adventures, the pair discover a secret cave that houses hundreds of wild dragons -- and a mysterious dragon rider who turns out to be Hiccup's mother, Valka. Hiccup and Toothless then find themselves at the center of a battle to protect Berk from a power-hungry warrior named Drago.
Themes of loyalty and trust are explored deeply, especially within family and friendships.
Key characters display strong leadership qualities and make difficult decisions for the greater good.
Taking on responsibilities and the consequences of one’s actions are significant motifs.
Certain scenes with intense action and peril that may be frightening for younger children.
Moderate fantasy violence involving battles between dragons, and between humans and dragons.