Soon-to-be-wed Bae Seok-ryu returns to Korea and runs into her old friend Choi Seung-hyo. But she acts strangely around him, hiding a secret.

Even as her loved ones ask for an explanation, Seok-ryu hides her vulnerabilities until a confrontation with her mom forces Seung-hyo to come to her aid.

As Seok-ryu adjusts to unemployment, she faces anxiety about her stagnant life. Seung-hyo clashes with his partner after a tense business meeting.

When Seok-ryu's old company presents a promising opportunity, she and Seung-hyo collaborate. Later, an unsettling encounter leaves Seok-ryu rattled.

Seung-hyo starts acting awkwardly around Seok-ryu as old feelings resurface. To complicate things further, he faces a delicate situation at work.

Seok-ryu explores a new career path, tapping into a childhood passion. However, her family faces a crisis when her father's secret comes to light.

A figure from Seok-ryu's past appears, leaving those around her looking for clarity — including Seung-hyo, who navigates his own complicated feelings.

As the truth finally comes out, Seung-hyo waits for Seok-ryu's response. Meanwhile, Seok-ryu's parents discover her new endeavor, sparking their fury.

As Seok-ryu deals with an ailment, Seung-hyo and Song Hyeon-jun compete for her affection. But soon, Syeung-hyu discovers the real reason for her return.

Seok-ryu's secret comes to light, leaving her loved ones struggling with the shock. When she goes missing, Seung-hyo desperately sets out to find her.