Everyone's interest was unbelievably picked. To be able to think of something like that so quickly was unbelievable, they can't wait to see how it progresses. Viggo and Ryker are even more interested than the others. Their obsession was being shown in new, delightful ways and they couldn't see what else is shown. Dagur is still thinking of ways to kidnap Hiccup and Toothless, possibly Fishlegs, to make a family of his own. He just has to get his sister on board fully. 

Dagur raises a brow, Hiccup is able to carry that kind of load. He knows personally how heavy that can be.

The Defenders are looking interested in how the boy trained the Nightfury. The words Hiccup told them before they came here rang in their ears.

Everyone shakes their heads. While it is uncommon knowledge it is still easily attainable knowledge.

Ryker and Viggo's eyes brighten a little bit.

Dagur scoffs and giggles at Hiccup's terrible lying. 'Hiccup should be glad the Nightfury was to busy with the fish.' Dagur thought while giggling.

Dagur starts laughing then, the defenders let out a few smiles.

Dagur starts dying with laughter, people are now looking over to see if he is ok. They turned back to the screen once they figured that he was fine, just one of his bouts of insanity. 

'What is that dragon planning-'

Eyes widen. Dagur suddenly stops laughing, staring intently up at the screen. Shadow slightly tightens the loosened binds on Dagur.

The defenders' eyes widen when they saw the working tail fin. If the boy gets it to work, that could change everything. Viggo and Ryker's faces go into shock at the contraption. He got it right on the first try. Sure a lot of things need to be improved but the fact that it's a possibility is everything.

Dagur grips his armrests tightly.

Everyone's faces are in shock now, including Dagurs now the danger was over.

While people are still processing what in Odin's name happened, Viggo already did and was trying to come up with a plan to get Hiccup with him and his brother for a... Meeting. Viggo smiled slightly.