In the serene English countryside, a group of friends throws a surprise birthday celebration for their priest. However, the festivities take a sinister turn when the priest opens his last birthday card to find a chilling message: everyone has been poisoned and has only an hour to live. As the guests begin to exhibit symptoms of poisoning, the group desperately searches for an antidote, leading to a series of unsettling and shocking events that will leave audiences in awe. Filmed in a single continuous take with a talented ensemble of UK actors, this movie delves into the intricacies of human nature and the hidden darkness within us all, serving as a stark reminder that even those closest to us could harbor deadly secrets. Be prepared: this film will profoundly impact your mind.