What episode is Happy Planet Tom?

Episode 22. In the TV series Happy Planet, there is a blond boy standing on the podium. His name is Tom, who was introduced by the Oriental teacher. His home is in distant Canada. Because of different cultural backgrounds, he played a lot of jokes with his classmates. Happy Planet 1 is a children's sci-fi TV series directed by Zhang Huimin, written by Hu Hongbing and starring Li Rui, Xing Kaixuan, Ge Sun, Zhang Zhaoyi and Zhao Keming.