After a tragedy turns her world upside down, Jin Young-soon raises her son with the aim of steering him away from a life of hardship like hers.

Filled with childhood resentment, Choi Kang-ho navigates his career with ruthless ambition — later approaching Young-soon with a cruel motive.

A shocking accident leaves Kang-ho's outlook uncertain. Young-soon takes him home and seizes an opportunity for redemption.

As Kang-ho recovers, he and Young-soon get closer. However, Young-soon later visits Seoul and witnesses unfavorable traces of Kang-ho's life.

After retuning home, Lee Mi-joo encounters Kang-ho in his new condition. Young-soon faces aggression from an unrelenting neighbor.

Kang-ho experiences a mysterious attack. Mi-joo finds an fortuitous business opportunity. The town convenes to rally against Young-soon.

Young-soon panics about the future after she receives scary news. Another sudden blow forces her to make hard decisions about herself and Kang-ho.

Young-soon pushes Kang-ho to the limits. She later finds a perplexing item from her son's old life. Mi-joo navigates her complex feelings around Kang-ho.