The official site for The Dark is Rising is now live and contains the first trailer for the upcoming fantasy adventure film based on the novel by Susan Cooper.

Read the official synopsis and watch the trailer here after the jump.

Directed by David Cunningham, the Fox-Walden film stars Ian McShane, Alexander Ludwig, Frances Conroy, Gregory Smith, and Christopher Eccleston.

Filming began eariler this year in Romania on The Dark is Rising, which is scheduled to hit theaters October 5, 2007.

I had read that this trailer was to be attached to the theatrical screenings of Harry Potter and the Order of the Phoenix, but it was not shown during the viewing I went to last night. I assume it must have been shown in other theaters/cities, as it’s no coincidence that this trailer has gone live today.

OFFICIAL SYNOPSIS: Baed on the acclaimed novel by Susan Cooper, THE DARK IS RISING is the first film adaptation of the author’s acclaimed The Dark is Rising Sequence. The film tells the story of Will Stanton, a young man who learns he is the last of a group of warriors who have dedicated their lives to fighting the forces of the Dark. Traveling back and forth through time, Will discovers a series of clues which lead him into a showdown with forces of unimaginable power. With the Dark once again rising, the future of the world rests in Will’s hands.