Tiger Cat is pregnant and returns to the secret cave of Cuihu Park with a laughing cat. Under the care of Ma Xiaotiao, Zhenzi Du and others (including the old mouse), in the cold winter, the tiger skin cat gave birth to four kittens: Fat Head, Er Ya, Sambo and Little Poor. Sambo inherited the characteristics that a smiling cat can laugh, and Er Ya inherited the temperament of a tiger cat. Fat head is the fattest kitten, and poor thing is the thinnest kitten. The whole family had a happy New Year. In order to get close to the three treasures, the old mouse dressed up as "panda cousin" who laughed at the cat. Just when this spring came, a sudden cold current sent this poor thing to heaven. ...