As the Zeo Teens quickly warm up to their new teammate, Rocky finds himself feeling left out and rejected by them. When King Mondo comes to Earth to retrieve a massively powerful sword, so he can destroy our heroes personally, Rocky faces the giant Machine Empire ruler alone in an attempt to prove himself. He learns a hard lesson in teamwork and paying the price for his own jealousy towards Jason. Meanwhile, Bulk & Skull are hired to track down the original Burble Baby Food label baby. They suspect it might be Jason, but Ernie foils them when he reveals that he was the original Burble Baby Food label baby. Also, Goldar & Rito are reunited with Rita & Zedd on the moon.