Ruby Ring

Ru Bi is thrown into turmoil when Gyeong Min, the ex-lover she parted with five years ago, suddenly reappears as the new head of her division. Meanwhile, Ru Bi's younger sister Ru Na, a reporter at a cable broadcasting station, is dating In Su, a talented producer. In Su dreams of a simple, ordinary marriage, but Ru Na harbors far greater ambitions, setting the two on quietly diverging paths.

Gyeong Min asks Ru Bi for another chance, but she firmly pushes him away, set on not wavering again. Yet the moment she turns away, her heart grows tangled. Though she thought it was over, lingering feelings keep resurfacing, leaving her confused about what she truly wants. Meanwhile, In Su finds a curious mole on the sole of Ru Na's foot. But Ru Na's mind is heavy with another worry that she might be pregnant. Unsure how to face it or whom to confide in, she sinks into anxiety.

The pregnancy is confirmed, leaving In Su overjoyed while Ru Na sinks into despair. When Gyeong Min's confession drives Ru Bi to consider leaving the company, Gyeong Min calls her out and takes her to a place full of their shared memories. There, he confesses to her once more, stirring up the feelings Ru Bi has been trying so hard to bury.

Ru Na quietly visits the obstetrician on her own and ultimately decides to go through with an abortion. Meanwhile, Gyeong Min tells his family about his relationship with Ru Bi, and his father, Chairman Bae, heads to the company to see Ru Bi for himself, only to meet with an accident along the way.

When In Su suggests she quit her job and get married, Ru Na refuses to have the baby, prompting In Su to declare a breakup. Meanwhile, Chairman Bae meets Ru Bi and gives his blessing for the marriage.

Chairman Bae and Il Sun give their blessing for Gyeong Min and Ru Bi's marriage. Ru Na heads to the hospital for the abortion, but when the doctor advises against the procedure, she clings to In Su, desperately begging for his help.

Gyeong Min visits Gil Ja's place to ask for marriage approval. Watching from afar, Ru Na is overwhelmed with misery and mistreats Ru Bi. At Ru Bi's request, Ru Na goes to the company, where she accidentally meets Gyeong Min.

The day of Ru Bi and Gyeong Min's family meeting has arrived. Meanwhile, Cho Rim and Dong Pal chase the scammer who once stole her money in a taxi pursuit. And after the family meeting, Ru Na continues to lose her way.