Billy invents a grafting machine and starts adding different creature parts to his body.
Plot[]
Billy is testing out his grafting machine on the beach when he spots a crab and notices how easily it is able to pick things up with its claws. Billy uses the grafting machine to switch his normal hands with the crab claws. He excitedly runs back home to show Marsha and Zeke. While running through a cave, he spots a bat and takes a liking to its echo location and uses the machine to get bat ears, leaving his regular ears with the bat. Tired of walking, he spots a big spider and likes how fast it moves. He switches his normal legs out for the spider legs instead.
Billy arrives back at the house to show off to Zeke and Marsha. While Marsha is horrified, Zeke thinks it is cool, that is until Billy realizes that he can no longer effectively play bowling with them. They angrily tell him to return to normal, but Billy refuses insisting that he is the "Better Billy" and that they are just jealous and leaves in a huff. He arrives at a volcanic area to get away when he is confronted by the Crab, Bat and Spider who all demand that they get their body parts back.
Billy tries to explain how to properly use their new body parts by regrafting them back onto himself and showing them the benefits. The animals are convinced and want them back, but Billy realizes that being normal is better and they fight over the grafting machine which falls into the lava below. The animals chase Billy around until he loses them. Billy returns home to Marsha and Zeke who are happy to see him return back to normal, only to realize that he now has a scorpion tail, though they opt to leave it as it is.
