Some half-Japanese girl named Maiko (pronounced "Michael" in the movie) wants to find the place where her mother committed suicide to give her a proper burial. She has nightmares and visions of a forest, of her childhood. Along for the ride come some friends of hers, foreign exchange students in Japan, who are going to...film the whole thing for a class project. Off they go then to the suicide forest, a forest in Japan where lots of people commit suicides by hanging themselves from trees. All they have to go by is a picture she has of the tree where her mother killed herself. I guess Maiko thinks it shouldn't be too hard to find a single tree in a forest. Who took the picture of the tree we don't know. She also has a box with two pieces of jewelry that belonged to the mother. She needs those for whatever ceremony she's going to perform that night, which happens to be Halloween night.
When they arrive, they find a sign that bans cameras, still they film. They hide from police (why police?) that removes the corpses. And then they meet the strange stranger who knows about the forest, who makes sinister pronouncements, who warns them not to do this or that, and who recognizes (!) the tree and will guide them to it. But quickly they run into some classmates who pull a prank on them. The pranksters then go their way and run into trouble. They steal a watch from a deceased man in a tent (?). But then the guy who takes the watch is attacked. The other guys run back to the other group. At this point it's night.
Maiko starts seeing things, we get to see some flashbacks from her youth about her mother, her violent father, and her sister. The stranger disappears. Maiko and the cameraguy end up arrested and handcuffed in the police station's morgue (?). Then something kills the cop, they escape, they find the tree, and more ghosts. Some of the other kids end up in trouble and injured. Then the sun comes up.
Grave Halloween has a good concept. It has a gorgeous setting. The Canadian forest they used is truly beautiful. The scenes filmed during the girl's childhood also look stunning. Overall, direction is very good. But that's all this movie has going for it. While making a movie about a real-life suicide forest sounds like a good idea, you've got to have a good script to work out the idea. And here's it just doesn't work out. It's not easy making a movie about a ghost story and this one sure doesn't succeed. Things get messy and unclear. The ending comes out of nowhere. Nothing is answered. The childhood scenes don't clarify things either but create more questions. And finally a fatal flaw is the weak lead actress.
