'How to Train Your Dragon 3' release date, plot, and major spoilers

Hiccup and Toothless will return for another epic adventure on "How to Train Your Dragon 3" but it won't be happening in 2016 as previously stated. DreamWorks Animation announced that there will be a delay in the movie release and it will now be on June 9, 2017.

Given that "How to Train Your Dragon 2" was a massive success, DreamWorks and Fox may just want to make sure that they make the best ending to the trilogy. The second movie earned $600 million worldwide, making it 2014's highest grossing animated film, according to Variety.

Now that the release date for the third movie is confirmed, what can fans expect from "How to Train Your Dragon 3" come June of 2017? Well, there's Hiccup leading the Vikings as chief of Berk and, of course, there's Toothless who will be seeking adventures alongside Hiccup. But there's always the evil forces that will try to kill the dragons or put their existence at risk.

Those who read the books probably have a good idea what the plot for the third movie will be. On the other hand, for those who prefer watching the movies, this is a major spoiler that they may want or not want to know about.

In "How to Train Your Dragon 3," all dragons will cease to exist. Each and every dragon will die or, according to Movie Pilot, "at least, they will disappear."

In the book, the first line reads: "There were Dragons when I was a boy."

The narration is done by Hiccup when he becomes an old man. He is reflecting on his life as well as his adventures with Toothless and the other dragons.

Well, this doesn't mean that all the dragons will be killed by the evil forces, but there's always the possibility of that happening. Other possible reasons could be that the dragons will choose to migrate to some other place. But that's doubtful because seeing the Vikings and the Dragons live together in peace and harmony will be the ending that fans of the book and movies would want to see.