When a clandestine party goes wild, it's all about pork... and prestige.

In the summer of 1947, Britain prepares to commemorate the wedding of Princess Elizabeth and Prince Phillip. To get around food-rationing laws, Dr. Charles Swaby, accountant Henry Allardyce and solicitor Frank Lockwood are fattening a black-market pig for the big day. Egged on by his wife, meek Gilbert Chilvers steals the swine, but the couple must conceal it from inspector Morris Wormold.