Peter, Quagmire, Joe and Cleveland form a neighborhood detective agency, and are stunned to discover that Chris is a thief. Meanwhile, Lois is worried about Chris' delusional relationship with his new girlfriend, but also sees it as an opportunity for Peter to copy Chris' romantic gestures.

Meg gets a new job at the airport, where she's instantly popular for being the hottest employee there. Meanwhile, Cleveland becomes a therapist and starts giving Peter and Lois relationship advice, but Peter quickly becomes frustrated and threatens to tell Donna a big secret about what went down at Cleveland's bachelor party.