Overview
Open Grave is a 2013 American post-apocalyptic horror film directed by Gonzalo López-Gallego, starring Sharlto Copley and Thomas Kretschmann, Joseph Morgan, Erin Richards, Josie Ho, and Max Wrottesley in supporting roles. Josie Ho plays the character of a mute. All the characters, excluding the mute, suffer from amnesia and cannot remember anything from their lives. The story follows them trying to figure out their identities and their past while evading zombie-like humans affected by rage virus and also their struggle to escape the forest they are stuck in. The film received generally negative reviews from critics.
Plot
A man wakes up in a large pit full of dead bodies and does not remember how he got there. A mute woman helps him escape, and he follows her to a house with four other occupants—a German man and three Americans. Like him, the others do not remember who they are; only the mute woman, who does not understand English, seems to know about them, although they slowly begin to remember certain attributes, such as an ability with guns or certain languages.
They find ID cards for four of them: the German is Lukas, and the three Americans are Sharon, Nathan and Michael. No ID is found for the man, who is given the name John Doe, or the mute woman. A nearby calendar hints that something is going to happen on the 18th — two days hence — but there are no notes to indicate what. Exploring the immediate surroundings of the house, they discover corpses chained to trees.
John, Sharon, Nathan and Lukas continue to explore the next morning. They find two cars and a picture of the five of them without John. Lukas takes this as a sign that John is not a real member of their group, though John suggests he took the picture himself. Later, John and Sharon stumble across a child hiding in a locked shelter. The child tells John his real name — Jonah — but is clearly terrified of him.
From Wikipedia (CC BY-SA 4.0).