Lin Ruo'an, the young heiress of the Lin family, is fleeing for her life when she runs into Bai Ge, a security guard munching on a pancake. In the crisis, Bai Ge accidentally unleashes a mysterious power and drives off the assassins, prompting Lin Ruo'an to hire him as her fake husband for a hefty sum. Facing her shrewd father, Lin Zhentian, Bai Ge uses a black iron sword to knock off his wig and seals his opponents with a banner. He even mistakenly credits his own power to his father-in-law's secret manual.
When the Xiao and Wang families join forces with the Qingming Sect to set a trap, Lin Ruo'an is injured and falls unconscious. Golden light bursts from Bai Ge, and Buddhist radiance shatters the formation! Through one hilarious mishap after another on his quest to protect his wife, the mystery of an ancient inheritance gradually comes to light. This goofy security guard rises to become the strongest live-in son-in-law, protecting his love amid all the laughs!
