She stumbles upon betrayal, and turns to flash-marry him whom she met during a public welfare activity. After the marriage, her family's business suddenly suffers a misfortune, and as she watches her family fall into hardship, this silent and introverted man quietly carries everything on his back behind the scenes, never showing off or claiming credit. When misunderstanding after misunderstanding gradually turns into understanding, she finally sees clearly: what kind of deep affection and sense of responsibility the man she married hides. It turns out that true guardianship never needs to be loudly proclaimed.