Homer fails to get the birthday present that Lisa wanted. The gift he gets her instead makes it obvious that he knows nothing about his daughter and that makes her disappointed in him. To win Lisa back, Homer hires a private detective to find out everything about her. The private detective comes through with information that restores Homer's relationship with Lisa. Homer refuses to pay the detective's $1000 expenses; to get even the detective arranges it so that Lisa is framed for a crime she didn't commit. When the police arrive outside the Simpson home, Homer takes Lisa on the run. While they are holed up in a cabin, Homer confesses what he did to learn more about Lisa. The police trace them there and Homer and Lisa's subsequent escape leads them to a circus, where they find evidence that will exonerate Lisa of the crime. Only first together they must deal with the crooked detective.