The Belchers take a trip on a train and, to their dismay, Louise, Gene and Tina are seated in a separate train car. Never one to follow the rules, Louise ropes the children into helping her on her mission to steal the vast chocolate supply from the restaurant car! Meanwhile, Bob and Linda indulge in some wine tasting and have a "taste-off" with a snobby couple.

When there is a bounce house crisis at Regular Sized Rudy’s birthday party, the Belcher kids devise a scheme to save the day. Meanwhile, Bob deals with an unexpected guest at the restaurant and is forced to come to terms with a longstanding fear.