on how to train your dragon dvd combo pack what is legend of the bone knapper dragon?

[toothlessthenightfury]

if you go to amazon.com on the how to train your dragon dvd combo pack it says includes legend of the bone knapper dragon is it a 2 movie? i what is it? . ps please help me

 

[HttydFreakToothless]

It's not a second movie it's just a short extra movie