简介：
Set1300yearsaftertheeventsofHowToTrainYourDragondragonsarenowjustalegendtothemodernworld.Whenageologicalanomalyopensupanimmensemiles-deepfissureintheEarth’ssurfacescientistsfromallovertheworldgatheratanewresearchfacilitytostudythemysteriousphenomenon.Soonagroupofmisfitkidsbroughttothesitebytheirparentsuncoverthetruthaboutdragonsandwherethey’vebeenhiding--asecrettheymustkeeptothemselvestoprotectwhatthey’vediscovered.
