Falling Into a Dangerous Love centers on Yun Jae-i, a talented designer who makes a heartbreaking choice to protect her family and unborn child from crushing debt. To shield her lover, Lee Taebin, she pushes him away with a brutal lie. Eight years later, Taebin returns as a ruthless, powerful CEO driven by a deep desire for revenge. However, as their paths cross and secrets about her sick child's true paternity begin to unravel, his quest for vengeance turns into a dangerous obsession and an unstoppable, intense love.