Kennedy Jamieson is a wealthy and privileged socialite who has always dreamed of having the perfect wedding. Engaged to the charming Ryan Harris, a successful businessman who loves her deeply, the young couple is just a week away from their big day. However, they haven't had a chance to celebrate their respective bachelor/bachelorette parties yet.
Ryan's best man, Chet, decides to throw Kennedy and Ryan a 'Jack and Jill' stag party at a remote cabin in the woods. The group includes the bride and groom-to-be, best friends, and a few others. Everything starts off well, with everyone enjoying themselves and having a great time. But things quickly take a turn for the worse as members of the group are brutally murdered one by one.
As the night progresses, tensions rise among the friends as they try to figure out who the killer is. No one knows where the killer came from, and it becomes impossible to trust anyone. Relationships are torn apart, and accusations fly as they try to survive the night and figure out who the killer is before it's too late.
As the group becomes increasingly paranoid, it becomes clear that things aren't quite what they seem. Everyone has secrets, and the real killer may be someone they never suspected. Death Do Us Part is a thrilling psychological horror with a whodunit twist that will leave audiences on the edge of their seats until the very end.