Season 1

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 …

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 resurf…

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 th…

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 th…

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 …

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…

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.

On Ru Bi and Ru Na's birthday, the two sisters set off for Seoul together. Ru Na pushes Ru Bi to hand over her brand new outfit and forces her ruby ring off her finger. With Ru Na now dressed as Ru Bi and wearing her ri…

After waking up from surgery, Ru Na is thrown into confusion when everyone around her begins calling her Ru Bi. As she tries to process what is happening, she learns that Ru Bi is in a coma. Seeing Gyeong Min sitting fa…

In Su rushes to the hospital after hearing about the accident. He is shocked to learn that Ru Bi, not Ru Na, is pregnant. Meanwhile, Il Sun goes to Chuncheon to meet Gil Ja.

After her treatment, Ru Bi visits Gyeong Min's family, hoping to finally be accepted. But his grandmother still keeps her distance. As the engagement begins to shake, Il Sun urges Gil Ja to reconsider the marriage. Mean…

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…

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

Ru Na is deeply relieved to find out that Ru Bi has woken up with no memory of who she is. Seeing Ru Bi awake in Ru Na's face, In Su is consumed by the unbearable truth. Determined to stay in control, Ru Na works to con…

Ru Na feels the weight of Ru Bi's memory loss, torn between guilt and the need to protect everything she has built. Her unease grows the next day when In Su shows up at Gyeong Min's home, threatening to disturb the frag…

On a trip to Chuncheon, Ru Bi runs into Yeon Ho and his friends. Mistaking her for Ru Na, Yeon Ho makes unwanted advances and Ru Bi narrowly avoids an uncomfortable situation. Ru Na is fully absorbed in her new life, en…

Ru Na is rattled when she is told to return to work, and her anxiety deepens after receiving a photo from In Su. Meanwhile, In Su is violently attacked by unknown assailants outside his home. At the office, Ru Na comes …

Gyeong Suk gets deeply upset when Gyeong Min defends Ru Na. Gyeong Min himself is actually growing deeply disappointed in Ru Na because of her drinking and excessive shopping. Later on, Ru Bi and In Su arrive at the exa…

In Su and Se Ra are chased by a mysterious car. In Su gets angry when he finds out that Ru Na was behind it. Because of Ru Na's mistake, JM Group faces serious financial damage.