Despite having all the makings of a fun holiday movie with the perfect mix of family drama and Christmas carols, Silent Night‘s ending explained that things are much darker. Set in what appears to be present-day England, the film begins with the coming together of family and friends at the country home of Nell, Simon, Art, and his twin brothers Hardy and Thomas. A familiar mix of personalities arrives at the house and an ominous secret is revealed: the world is coming to an end and everyone plans to take a government-issued “exit pill” to avoid a torturous death by poison gas.