Finders Keepers

Peter arrives from work with foul breath. It affects his relationships with the family until Lois forces him to go to the dentist. The dentist discovers a shrimp left in Peter's mouth for an entire week. To celebrate, Peter and the family goes out to eat. The waiter tells Stewie that his placemat is a real treasure map and spins a yarn about Miles "Chatterbox" Musket which impresses Peter, despite Lois' insistence that it is a joke. Peter tries to involve the guys in his hunt without luck.

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As Lois comes to fetch him while digging his own, he digs up a treasure chest. Taking it home, the family discovers it contains a clue to more pieces of the puzzle. Despite Brian's urging to keep it secret, Peter had already gone public, launching a city-wide hunt for the treasure. When the guys try to join in, Peter sends them out on their own. Following the clue, they join everyone else but Brian follows a slightly different angle on the clue. Peter and Lois start off to find the treasure and abandon the family. Splitting off, Meg and Chris head out as well as Stewie and Brian. Others also figure out the meaning and converge on Block Island. At the island cemetery, they locate the grave of Timmy Musket where Peter fights with the others including Chris to get the treasure resulting in Lois abandoning him.

Digging up Timmy Musket, they discover another clue inside the lid of the casket which leads them to Pawtucket. At McCoy Stadium, Peter arrives to find everyone else fighting and realizes that Lois was right. Peter returns to Lois and apologizes. Peter explains where everyone is but Lois deduces that they are looking in the wrong place and redirects Lois and Peter to The Drunken Clam. Seeing a painting, Peter pries it off to discover a treasure chest which contains an expired restaurant coupon.