Long live the dragon warrior

"In 'Challenge Day, ' it's Dragon Warrior Challenge Day. Anyone who bests Po by sundown will be named the new Dragon Warrior. Po isn't worried, not until a certain disgruntled rhino shows up - on who would be more than happy to take Po's place. In 'Kung-Fu Kid.' Po and Shifu are hosting the Peace Jubilee. Po gets excited when he discovers a kid who is bodacious at kung fu! But it isn't long before Po starts to feel jealous. All anyone can talk about is the new kid. Could Po's days as the Dragon warrior be numbered?