chunk: They run into a dragon rider named Valka, who is revealed to be Hiccup's long-lost mother. She explains that she, like her son, could not bring herself to kill dragons. After being carried off during a dragon raid, she spent twenty years rescuing dragons from Drago's traps and bringing them to an island nest created out of ice by a gigantic Alpha dragon called a "Bewilderbeast", which is able to control smaller dragons. Stoick tracks Hiccup to the nest, where he discovers that his wife is still alive. Meanwhile, Astrid and the other riders kidnap Eret to find Drago, but Drago captures them and learns of Berk's dragons.