Summary:
Their War, Our Era
700 years ago, a great moth demon fought to dominate all of the world, beginning with Japan, during their feudal era. 200 years later, the great demon's son is resurrected from a deathly curse. The demonic son revives his father within his body through a ritual ceremony that allows all the descendants of the moth demons' ancestors to bear the power of all of the previous moth demons combined.
It is the year A.D.2007. Life is normal for a young Japanese girl named Kagome, except for that fact that she can travel back 500 years into the past into Japan's Feudal Era. There she meets a half-dog-demon appropriately named InuYasha, and seeks the scattereed shards of the Shikon no Tama, the Jewel of Four Souls. This jewel can allow any demon or anyone to gain massive power just by wielding it. Kagome and InuYasha, with the help of several friends, find that a moth demon known as Menomaru has the next shard, and plans to gain the power of not only the Jewel shard, but the power of his ancestors before him.
Now the year is A.D.2008, and life is thriving in Bayside, Queens, New York. Three teenagers with connections to each other live their lives normally. One is a nerd, another is the nerd's cousin, and the other is a guitar player with a lot of groupies. They go to the local high school, all in eleventh grade, until the school year ends, and the three of them search for jobs, cars, other friends, vacations, and all the like.
Their parents are friends with one another as well, and the five parents (one pair is divorced), decide to bring their children to Tokyo, Japan for a vacation. The friends are reluctant to go, but eventually give in. While in Japan, things begin to go wrong. Their hotel room reservations were cancelled, as the hotel was shut down, so they are then picked up by the family of one of the parent's old friends from an exchange student program, back when they were teenagers.
The three families reside at the family shrine of the fourth family's for a while, but during that time, the teenagers find a dark secret. The fifteen-year-old female daughter of the family is hiding something, and the other teenagers are dying to find out.
But all is revealed one night, when a large swarm of moths fly out of the shrine's well, and things only get worse from there. Demons begin to emerge from the well, destroying everything and attacking everyone. Fearing there is nothing they could do, the five parents bring their children and the Japanese family back to Bayside with them after escaping from the invasion at Tokyo.
They soon find out it wasn't just conquering Tokyo that they were after, and the four families only brought the demons to New York City. It isn't long before everyone realizes that the Army and the Air Force isn't enough to defeat these demons, and they must be defeated from the inside.
Disaster after disaster come one after another, and the teenagers of the four families must ultimately be the ones to end the madness. Stopping at nothing to conquer the new age and defeat their only threat, the demons bring in the heavy powers to fight the young teenagers from the future. With the help of a few demons and a bunch of other men and women, Earth just might stand a chance against the dmeons, but can they save the future of mankind?
End of Summary: Their War, Our Era