Lois' pregnant sister inspires her and Peter to have another baby.
Quest roles:
Patrick Warburton(Joe Swanson (uncredited) (archive footage) (voice)), Adam West(Adam West (voice)), Gary Cole(Principal Shepherd (voice)), Wallace Shawn(Bertram (voice)), Mike Barker((voice)), Shawn Pyfrom(Oliver (voice)), Majel Barrett(Ship Computer (voice)), Carol Kane(Carol (voice))