Li Fan, the leader of the retired demon sect, is willing to be the Su family's "useless son-in-law" and just wants to cook and provide for his old age; unexpectedly, his cold-blooded wife Su Qingxue turns out to be a righteous saint who has gone down the mountain to endure calamities! The two didn't know each other's true story, and they both thought the other was a "weak chicken" who needed to be carefully protected, and they started a life of co-acting in the immortal version of "Mr. And Mrs. Smith".
Faced with enemies from all walks of life looking for trouble, the couple secretly killed the enemy in seconds, and at the same time pretended to be stupid in front of each other, creating countless "Dihua" jokes and the ultimate contrast. With the funny father-in-law's "fake guru" disrupting the situation and the arrival of the two powers of good and evil, the two's ultimate vests were exposed. In the end, the Demon Lord and the Saint joined forces in a "mixed doubles" and swept the world of cultivation, turning the grievances of the world into firewood, rice, oil and salt, and performed a hilarious and passionate story.
