After transmigrating, Song Yu is determined to protect the Song family, so she wants to find a disabled husband who will be easy to control and whom she can simply support. During a matchmaking meeting, she mistakes Shen Yan, the heir of the Marquis of Pingning who is pretending to be disabled to avoid the world, for a poor scholar and impulsively marries him. After their wedding, believing her husband to be a wealthy family's downtrodden punching bag, she becomes fiercely protective of him and repeatedly puts his troublesome relatives in their place. In truth, Shen Yan is a Grand Tutor who has been reborn. He originally intended to fake his disability and wait for death, but her passionate and unwavering devotion moves him, and he secretly stops taking his medication and begins treating his legs. As they test each other's intentions amid household intrigues and political schemes, the two eventually join forces to overcome every crisis.