Desperate to find the funds to pay for his daughter's wedding, ChurchWarden George Williams seizes the opportunity to rent out the vicarage while waiting for a new vicar to be appointed.  The booking is to a touring Theatre Company, who are to stage a Murder Mystery weekend in which a female Vicar and a Bishop are among the cast.

Unfortunately for George, a new female Vicar is appointed to the vicarage before the Murder Mystery weekend can take place.  George thinks he is still in luck when the new Vicar, Caroline Timberlake announces that she is to visit friends at a college reunion over the weekend.  However, events take a turn for the worse when Bishop Herbert rings the vicarage to announce that he is to visit to meet his new vicar.  Chaos ensues as the actor playing the Bishop in the Murder Mystery weekend is mistaken by George and fellow Churchwarden Alan, for the real Bishop Herbert and the Bishop himself mistakes the actor playing the Vicar for Caroline.  Matters get worse as half of the Theatre Company fails to make an appearance and the remainder spend most of their time either fighting with each other or getting drunk, or both.  This is even before we meet the guests!