[A dangerous love triangle between twin brothers] Cinderella, a life reversal. The “scandalous girl” who managed to win while walking the tightrope between two brothers. These were the labels given to Seorin, who lost her parents and was taken in as the foster daughter of the Taegang Group. The most precious person to Seorin was Taegang Group’s eldest son, Tae Hajin. But when Hajin fell into a coma after an accident, his twin brother Tae Sijin approached Seorin—and so began the dangerous triangle. “Amazing… that Tae Hajin still has this kind of power over you.” “Hajin is my most… precious person.” “Ah… your first love.” For Hajin’s life support treatment to continue, Sijin’s consent was necessary. But what came back to Seorin, who was willing to do anything, was only his corrupt gaze. “There’s only one thing you can sell to me.” In the end, to save Hajin, Seorin agrees to marry his twin brother, Sijin. However, on the very day of Seorin and Sijin’s wedding, Hajin miraculously opens his eyes…