Dad Zhou lives happily with his son Zhou Xiaodi, the alien dog 7仔, and the big chubby dog Chocolate. In an abandoned construction site turned playground, Zhou Xiaodi and the alien dog 7仔 encounter the bumbling warrior No. 88 from another planet. Meanwhile, the interstellar arch-villain Jin Baobao has arrived on Earth aboard the universe's most powerful robot, Da Tiantian, plotting to destroy the planet through a sinister gourmet scheme. To protect Earth, the bumbling warrior No. 88 is entrusted with a critical mission and teams up with the adorable kids and pets represented by Zhou Xiaodi and 7仔 to form the Earth Defense Team, uniting to confront Jin Baobao. An extraordinary battle between Earthlings and aliens officially begins. Throughout the conflict, many hilarious and heartwarming stories unfold. In the end, the Earth Defense Team pools their strength and relies on a secret weapon recorded in ancient texts to defeat Jin Baobao...