For the first time in the show's history, Lois and Stewie finally understand each other -- thanks to Brian's edibles -- and explore and try to explain their complicated relationship.

Marge's crusade to get the family dog in better shape leads to her entering Santa's Little Helper in canine agility competitions and a trip to the National Dog Show in Philadelphia. There, Marge and Homer suddenly find themselves — and the dog — mixed up in a historical conspiracy adventure worthy of a "National Treasure" movie.

Homer strikes up an unlikely friendship with Kirk Van Houten, which leads to them launching a hugely successful business venture together - a "crumbless" cracker that sweeps the nation. But when Kirk's darkest secrets are revealed, Homer has to choose between his family and his fortune... and may just end up going in jail.