X (the TV series) basically explains what happened in X 1999 (the movie) in more detail and greater depth. X, the TV series, introduces all the main characters who are involved in the battle of Dragon of Heaven vs Dragon of Earth one by one. Here is the summary on the plot from the movie:
At the millennial edge, the concluding battle for humanity's future is staged. Kamui…
Kouda Kaho
Related works
There is an old legend that speaks of a hidden paradise on Earth — a paradise which only wolves can find. And while thought to have been extinct for hundreds of years, wolves indeed still walk the earth... hidden among mankind. Now, a group of outcast wolves set out to find Paradise: Kiba, Hige, Tooboe and Tsume. Each wolf is driven by their own personality and desire, but…
The story takes place 500 years before the story of Saiyuki. A heretic child with golden eyes is brought into Heaven. He is given into the reluctant care of a minor deity named Konzen, the nephew of the Merciful Goddess Kanzeon Bosatsu.
Konzen eventually gives the child the name "Goku". Goku becomes friends with two other minor gods, Marshal Tenpou and General Kenren of the…
Brought together by a mysterious song, Kamino Mei, a grad student, and Arikawa Yun, an engineer, lead the fight against an unimaginable force that may spell doom for the world.
Source: netflix
Note: Each episode was delivered on Netflix one week before its TV broadcast.