 Twenty-seven years after "Mad Holiday", the Channing and Franks families live on a thoroughly terraformed Pluto, and the Channings' daughter Diane is married to the Franks' son Jeffrey.Don Channing, Walt Franks and Jeffrey Franks get together to try to come up with a teleportation device that will allow original objects, and not just their duplicates, to be transmitted across interplanetary space.They succeed in teleporting mice from Pluto to Triton, but the mice only live for five minutes.