Li Doudou was expelled from his clan for being naughty since he was a child. By chance, he entered the Yunxiao Sect to practice martial arts and become an immortal. Use humor to resolve the crisis between enemies and friends, get acquainted with Su Xiaoyu and Wang Dazhuang, and learn from Elder Lu. With the turmoil in the Three Realms and the undercurrent of the demon clan and demon sect, Li Doudou repeatedly turned dangers into safety as he grew up in laughter, solving thousand-year-old mysteries. After going through sword fights, refining medicine, exploring secrets, comedy, love, etc., He finally shouldered the important task of saving the world. He used his unique humor and optimism to inspire everyone, and joined forces with his partners to battle wits and courage with the villain Xuan Wuji. After four volumes of ups and downs, he finally suppressed the darkness with laughter and brought peace to the three realms.