Peter is convinced that a restaurant placemat is a treasure map. Word quickly spreads about the alleged cache, sparking a city-wide search and turning the citizens of Quahog against each other.

When Quagmire meets a woman named Sonja who is as sexually insatiable as he is, he is thrilled to finally be with someone who won't judge him. However, things take a turn for the worse when Sonja abducts Quagmire, intending to make him her sex slave. It is up to Peter, Joe and Quagmire's dad to explore the seedy underbelly of Quahog to find and rescue Quagmire. Meanwhile, a love triangle emerges between Stewie, Brian and Stewie's teddy bear, Rupert,.