Da-jeong, a pediatric resident, ends up spending an impulsive night with Tae-kyung, the newly appointed hospital foundation director. What she hopes to forget quickly becomes impossible when he refuses to let it go. Known for his harsh and ruthless personality, Tae-kyung threatens departments running at a deficit—including Da-jeong’s. Though she fears him, she finds herself increasingly drawn to him, even as their relationship begins under unequal power and uncertain intentions.