On the surface, Kate and Jack are happy but, like everyone, they carry secrets that neother is prepared to reveal. After their wedding they awake from a deep sleep, each alone in a sealed room with no doors or windows - only images projected on the walls and a monitor with two buttons: one for "yes" and one for "no". As the horror of their situation unfolds, surveillance films showing their life together appear on the wall, while the monitor starts asking terrifying questions. It soon becomes apparent that a bizarre test of their relationship is underway and the secrets revealed lead them deeper and deeper into what could not just destroy their love but threaten their lives?