Min-hwan's engagement dinner ruined when Ji-won appears, embarrassing him. Gossip says called off engagement due to Min-hwan cheating with Su-min. Su-min tries hiding incident, but lies renew supermarket scandal, trapping her.
Min-hwan proposes to Ji-won with Ji-hyuk's help. Ji-won spreads rumors at work. Su-min tries turning Min-hwan's mother and Ji-won into enemies to ruin the engagement dinner. The anticipated dinner arrives.
Ji-hyuk reveals his feelings for Ji-won, but she is preoccupied resisting her fate. As forces oppose Ji-won's destiny, her name disappears from the proposal. Ji-hyuk inspires Ji-won's stand while she remembers a future.
Ji-won pursues him relentlessly while he puts on the brakes. He opens up and share a kiss. Meanwhile, Su-min and Min-hwan hasten their wedding plans due to a surprise pregnancy. Ji-won attends with Ji-hyuk, hoping to outshine the bride.
Ji-won receives invitation to Chairman Yu's home and plans future with Ji-hyuk. As they near happiness, Su-min, missing since Min-hwan's death, reappears, concluding the long-forged tragic fate binding the three.
After an accident, Ji-hyuk awakens , follows the party Yu-ra is hiding. Ji-won believes getting Min-hwan to cheat will pass her fate to Su-min. She becomes Min-hwan's secret lover, fakes a breakup with Ji-hyuk and reconnects with Min-hwan.
Ji-won's trust in friend Su-min shatters when she learns of affair with husband. Dying of cancer, she overhears them planning for her death payment. Unable to live final days, she's murdered. But then she suddenly wakes up, and it's 2013.
Ji-hyuk becomes involved in Ji-won's life despite no prior connection. Su-min invites Ji-won to a school reunion to revive traumatic high school memories. Ji-won sees Su-min's motivations, transforming herself with the help of a colleague.