What is the riot of the round shark in Poké mon animation?

Xiao Zhi and his party rested on the way, and Xiao Zhi sent round sharks to let them continue to exercise the meteor group. Traditionally, the meteor group failed every time it was used, and every time Piplup was accidentally injured. No matter where Piplup is, the meteor swarm will hit it impartially. Finally, Piplup, who can't bear it, finally gets angry with the round shark, but he doesn't want to be bitten by the round shark. Finally, Piplup, who couldn't stand it, began to attack the round shark. ? But unexpectedly, Xiaoguang, as his trainer, didn't comfort himself, and Xiaozhi, as a round shark trainer, didn't blame the round shark, but all cheered for the round shark, which caused strong dissatisfaction in Piplup. In this mood, Piplup complained to the Rocket Trio that he wanted to go back to the original Yamanashi Institute. Touched by Piplup's experience, the Rocket Trio intends to talk with Xiao Zhi and his party. In the case that Piplup thought the Rocket Trio was a good man, Pikachu was taken to the Rocket Trio by Piplup and was arrested, but Xiao Zhi and his party also arrived later. Xiaoguang and Xiao Zhi also apologized to Piplup. However, a situation like Piplup's was actually embarrassing and eventually returned to the team naturally.