so lately I've been thinking about the plot for the third How to Train Your Dragon movie and what it might be. While I don't think there are any details released about the actual plot yet, I've been coming up with my own and what I think would be a good way to end the trilogy.
I think the third movie should be about Toothless and finding more night furies. It only makes sense since they've touched upon the fact that he may be the only one left both in the TV show and the second movie. I think it would bother Hiccup a lot, and he would eventually want to make it a goal of his to find more night furies or confirm his suspicions that Toothless