Jack Learns to Jump Good

Jack almost enters a time portal, which Aku then steals by raising it out of Jack’s reach. Jack tries jumping to enter the portal but cannot due to his lack of jumping skills. On his continued travels, he helps a peaceful tribe of apelike creatures and their human leader defend themselves against the attacks of a larger rival tribe in return for lessons on how to “jump good”, which involves jumping to gravity-defying heights. He is last seen surprising Aku with his new abilities when Aku tries to steal another time portal.