Ai Xue. Happy Planet is a large-scale children's sci-fi TV series, which tells the story of Ding Kaile, a fourth-grade student in a primary school, who lives quietly, normally and step by step like most 1-year-olds in China. Happy Planet 2 The person Ike likes is Ai Xue, and Ai Xue is just Ike's assistant. In order to cover up his true identity, he is a brother and sister relationship. Recently, the old urchin in Happy Planet has been unhappy.