Hiccup has created a new device, the 'Thunder Ear', that can hear noises from far off in the sea. When Hiccup tests it with Stoick by his side, they hear unfamiliar dragons which they quickly investigate. It turns out to be three young Thunderdrums, all of which follow them back to Berk. Once back, the Thunderdrums cause chaos, and the only thing that can stop them is Thornado, Stoick's adult Thunderdrum. After Hiccup tries and fails to keep them under control, Stoick orders him to send them away from Berk, but they keep persistently following them back. How will the Riders put an end to the constant noise?
I love the young Thunderdrums in this one. We also get another episode largely centred on Stoick, this time also focusing on his dragon, Thornado, as well. The relationship between the two is very different to the other riders and their dragons, as they are more like allied leaders. We really got to know Thornado in this one, it's a shame we had to say goodbye in the very same episode. It makes me wonder if Stoick will get a new dragon for the finale. Probably not. The parallels between Stoick and Thornado were excellent and I loved them. Easily an eight.