Based on the infamous true events, this unbelievable story is about a crew of retired crooks who pull off a major heist in London's jewelry district. What starts off as their last criminal hurrah quickly turns into a brutal nightmare due to greed.

Our heroes arrive in London to interview Lady Holiday, a high-fashion designer whose priceless diamond necklace has just been stolen. But when Kermit mistakes lovely receptionist/would-be model Miss Piggy for her aristocratic employer, its love at first sight. Unfortunately, Lady Holiday's scheming brother is also wooing the sultry swine - so he can frame her for another brazen jewel heist! Now it's up to Kermit and his Muppet pals to clear Piggy's...