Hayden Jansen arrives at Moravian College, where he clearly doesn't belong. He finds his broter Dirk's office, but it's empty. He waits in a chair, falling asleep.
Dirk returns to his office with three students. He sees his brother, but handles the students' needs first.
Dirk assumes Hayden is going to ask him for money, but surprisingly, Hayden asks for a job. Hayden has been clean for 6 months and he wants to work.
Dirk gets a call and once he gets off, he tells his brother he might have work for him after all.
Dirk and Hayden stand before Clewell Hall, alongside Campus Director of Construction Buddy Cole and several workmen. The front corner of the building has collapsed into a large hole in the ground. They discover a chamber covered with brick.
The next day, Cole introduces Hayden to another workman, Chuck McKinney. The two men are going to be sent into the chamber to see what needs to be done to fix the hole before the school decides how much money to spend on repairs.
Dirk visits the Campus Architect's office. The chamber can't on any campus documents. The architect knows nothing about it, which likely means the chamber dates to before 1742 and hasn't been opened in all that time.
Hayden and Chuck argue over who should go into the hole first. Hayden was hired last, so he goes first. As he's descending into the hole, Hayden slips twice. He comes face-to-face with the obsidian statue of a giant woman. He falls, crashing to the floor.
He wakes up and Chuck has joined him. Hayden has broken his ankle and several ribs. An ambulance is on the way. They stare at the statue of the giant woman. She holds the handle of a massive hammer.
Paramedics load Hayden into an ambulance. Dirk checks on him. Hayden warns Dirk not to go into the hole.
Dirk joins Chuck in the chamber, upset that his brother failed. Chuck got the job because his mother Gwen teaches linguistics at the college. Dirk knows her.
Dick discovers the giant statue of the obsidian woman, he is fascinated. Chuck warns him against the statue, but dirk laughs it off. Dirk orders Chuck to get the statues to the anthropology lab.
Dirk sees a rectangular block of obsidian. He has it taken to his office. He examines the block and tries to open it but can't. He examines it in the moonlight and a Latin phrase lights up. Dirk calls Gwen to examine the block.
Chuck crashes through a wall in the chamber and discovers a book.
Gwen is excited by the obsidian block. The moonlight reveals the phrase “ut vivat, omnes alii moriantur.” She goes to read it out loud, but Dirk stops her. Instead she writes it out and translates: “that she may live, let all others die.”
In the chamber, the statue’s eyes open. It starts moving.
In Dirk's office, he and Gwen et spooked. She leaves.
The statue approaches the workmen and kills them.
Gwen returns to her office to find Chuck waiting for her with the book. Gwen sits at her desk, taking copious notes from the book. Chuck sleeps in a chair. There's a crash outside, Gwen pulls out a gun. The statue's hammer smashes through the wall. Gwen shoots it, but the bullets do nothing. The statue kills Chuck. Gwen escapes through the hole in the wall. The statue hits her in the thigh with the hammer, but Gwen escapes. The statue follows her.
Dirk sits alone in his office, staring at the obsidian object. He taps the block with a jeweler's hammer and it shatters. Gwen arrives, panicked. She realized he broke the block and tells him it was the only way to stop the statue. She hands him the book.
She says that everybody is going to die and kills herself. The statue arrives and kills Dirk.
Police officers block the college entrance, guns aimed at the statue. They open fire on it, but the bullets do no harm.The statue kills an officer with her hammer. She slaughters the other cops.