It's Hiccup's birthday, but that's not going to keep him from getting into trouble. To save his dragon, Toothless, from being banished, Hiccup must sneak into the Meathead Public Library and steal the Viking's most sacred book.

It's Hiccup's birthday, but that's not going to keep him from getting into trouble. To save his dragon, Toothless, from being banished, Hiccup must sneak into the Meathead Public Library and steal the Viking's most sacred book.

Don't miss an action-packed, hilarious, heart-warming moment of the New York Times * bestselling series that inspired the hit movies!*

The heat is on for Hiccup! Someone has stolen the Fires-Stone from Volcano Island, which means the Volcano has become active and the tremors are hatching the Eggs of Exterminator Dragons! Can Hiccup return the Fire-Stone to the Volcano, stop it from erupting, and save the Tribes from being wiped out by the terrible sword-claws of the Exterminators? This fifth adventure in the How to Train Your Dragon series is packed with the action, humor, heart, and remarkable illustrations that have made Cressida Cowell a beloved bestseller around the globe.