After a confession, Ji-hyeok and Da-rim begin a secret romance — but not without close calls. Meanwhile, someone at work learns that Da-rim is unmarried.

Da-rim grows wary of Ji-hyeok's constant affection. Later, when their mothers gather at Seon-u's home, Ji-hyeok's competitive streak flares up.

When Ji-hyeok learns the truth about Da-rim, he feels relieved yet deceived — and his unpredictable behavior pushes her to confess everything.

News of Ji-hyeok's engagement shocks Da-rim — and his coldness only deepens the hurt. But a company trip soon forces them back into close proximity.

Ji-hyeok and Da-rim's bond deepens as they team up at a company event for newlyweds. Later, Da-rim falls in the mountain amid an unexpected crisis.

After witnessing Kim Seon-u's apparent romantic rendezvous with Yu Ha-yeong, Ji-hyeok debates telling Da-rim while caring for Da-rim during her illness.

After Ji-hyeok pays off Da-rim's debt, he starts meddling in every part of her life — leaving her torn between frustration and affection.

A tense escape from loan sharks brings Ji-hyeok and Da-rim closer, reigniting their spark. Later, Da-rim makes a heartfelt plea to keep her job.

Da-rim and Ji-hyeok's unexpected reunion at work takes a tense turn when he learns of her "marriage" — becoming a ruthless boss as punishment.

As their ruse turns into a real spark, Da-rim and Ji-hyeok go on an actual date. Meanwhile, Da-rim's mother collapses after a shocking confrontation.

Ahead of her sister's wedding, Go Da-rim heads to Jeju Island, where a sudden encounter leaves her reeling — until she meets Gong Ji-hyeok by a cliff.