*SPOILER!* Don't read if your going to watch it.
Its about a movie that people watch, after they finish it (its an artsy, very very bizare film with dead horses and a ladder and some other wierd crap.), the phone rings, and a little girl says "7 days."
Basically, you have 7 days to solve the problem or you die. Several people die, a woman is investigating it, she watches the video and then her son watches it. Woops! Now they are both going to die unless she figures it out. So they trace the move over this womans life time, learn about a woman who can't have a child, so they adopt.
The child is murdered because she puts the mother in pain - even though the love eachother...
She drowns the girl in the well. 7 Days you can survive in the well.
The Mother and son who watched the video finally find the well, its the 7th day, the last minute is comming up, shes about to die, but she doesn't. They think they figured it out.
But the son gets a bloody nose. Meanwhile the Ex-husband/Father of the son had also watched the video, they race to his house, he's dead. But they solved the problem right? Wrong, you have to show the video to someone else and then you are no longer under the 7-day curse.
The mother and son copy the video and show someone else, end of movie.