Yes! Fire is going on an adventure :D

And the sacrifice is part of their peace treaty where in exchange for the land the dragons can live on (i.e. not being eradicated) they have to give up one healthy adult dragon every 50 years (dragons reach puberty at 50 years and can produce children which is why this frequency was decided) for the humans to study. The sacrifice usually survives but it's a miserable life because they're treated like a lab rat. Because Fire is a child and refuses to obediently comply he finds all sorts of ways to escape. Although the escapades are short it gives him a chance to help and befriend other humans who then in turn try to help him!