Frozen

After rescuing Trader Johann, Hiccup and Toothless return from a mission to find Berk mysteriously empty. They discover that the village has been overrun by Speed Stingers, a non-flying dragon that move at blindingly fast speeds and can paralyze their victims with their tails. The Speed Stingers have trekked across the frozen sea to Berk and driven everyone out of town. Now, Hiccup must find a way to drive the Speed Stinger horde away from Berk before their next raid.