Bing! Bam! Boom!

''Bing! Bam! Boom!'' is the 18th episode of Dragons: Defenders of Berk.

Overview
When three adolescent Thunderdrums attack the village, only Stoick's Thornado can bring chaos to order.

Trivia

 * This is the first and last Defenders of Berk episode that will be focusing on Thornado.
 * This it the frist episode that Hiccup actually calls Thornado by his real name.
 * Thornado is released by Stoick in order to take care of Bing, Bam and Boom.