Description：Dad Di (voiced by Shi Renmao) and his son Xiao Di (voiced by Xu Jiao) have no fixed place to live. He works odd jobs at various construction sites every day, doing the hardest work, but in order for his son to have a good future, he tightened his belt and sent his son to an aristocratic school. One day, Dad Di picked up an alien creature named 7 in the trash can. 7 is like an omnipotent tool. It can not only help Xiao Di solve various troubles and problems encountered in life, but also continuously generate endless energy. The father of Xiao Di's classmate Dan Tart Head works in a research institute. After discovering the magical effect of 7, he became greedy and offered to buy it at a high price. The Di father and son were not moved by money at all. Angry and embarrassed, he kidnapped 7 to the research institute and used instruments to squeeze the energy in 7's body. The Di father and son were extremely anxious. They sneaked into the research institute late at night and rescued the already