The film takes place in real-time during a school shooting. The young student Eva tries to hide in an auditorium in an attempt to wait for the police to come and stop the shooter. Or shooters. Eva doesn’t know. All she knows is that she can trust no one, not even the other people also trying to hide in the same place. Slowly the violence and killings break her down and she calls her mother to say farewell convinced she’s going to die.