When Peter and the guys try to salvage a sunken Mercedes-Benz after hearing a news report of a cargo of them sinking, Peter half-heartedly promises a favor to a dolphin named Billy Finn that helps him recover a hood ornament. Billy decides to take Peter up on his offer and see what things are like on dry land. Peter is amused at Billy's sense of humor at first, but Billy soon begins to wear out his welcome. When Peter finally agrees to ask Billy about moving on, Billy proposes getting Peter a second hood ornament which stops Peter in his tracks. When Peter discovers part of his problem is his estrangement from his ex-wife, Peter reunites the couple and gets Billy to return to the ocean.
Meanwhile, when Stewie leaves the daycare covered in fingerpaints and reports neglect in the classroom, Brian offers to discuss matters with Miss Emily. But when Brian scores a date with Miss Emily, he resorts to running interference with Stewie to keep him from getting Miss Emily in trouble when she dislocates his arm until Brian has a chance to have sex with her. But when he discovers she already has a boyfriend, he calls the police to have Emily arrested and Stewie gets to attend a new pre-school.