Exes Ward Dunbar and Camille Buhay unexpectedly reconnect in London, where they are interviewing for similar jobs. They discover they both got the job working opposing shifts. Ward starts the day shift, but when he clocks out at the end of the day, he finds the door locked and himself trapped in the building. After a horrific first night shift contending with spirits and ghosts, Camille is also unable to escape. In their respective prisons, they discover that they're able to talk to each other a few minutes before dawn. This fleeting encounter incites longing for each other, but they are caught in a war of the gods - and their choices will determine the outcome.