The song "Daddy's Gone" was performed by Scott Grimes and Seth MacFarlane, and was made available for download at iTunes shortly after the episode aired.
Stan is drawn to a used hot tub in the store's back room that the salesman, Maguerite, tries to talk him out of purchasing.
This eventually leads to him and Francine having their most intense sex through their vivid sexual fantasy ("Hot Tub of Love").
When Stan chooses the tub, Francine packs the rest of the family and leaves for her parents' house ("Daddy's Gone").
Still unable to shake his suspicions about the hot tub, Maguerite investigates its past, learning that it came alive after being struck by lightning and killed its original owner.
Club gave the episode a B+, saying "American Dad used tonight's season premiere to establish itself as the weird middle sibling of the Fox animated shows.
[4] Dyanamaria Leifsson of TV Equals gave the episode a positive review, saying "The plot line quickly went from somewhat standard American Dad fare to just plain crazy as we discovered that the hot tub was alive and had escaped from a mental institution.