Jae-wan, a successful lawyer, takes on the case of a rich executive's son, who has purposely run over and killed a man and left his daughter seriously injured. It's Jae-wan's job to defend a murderer, just another rung on his career's golden-stepped ladder. His younger brother, on the contrary, is a scrupulous and upstanding paediatrician, who always puts the health of his patients over profit and money, often contravening the rules of the private clinic where he works. The brothers meet once a month with their wives for fine dining in expensive restaurants, but when an unexpected situation involving their teenage kids arises, their consciences are questioned and their usual dinner conversation takes an unexpected turn.

A young man works at the bond collection call center. He is polite, pure and sincere at a glance. On the other hand, the director of the center is not called to the head office, so she is antsy every day. And she has a daughter who is having a hard time preparing for a job.

A couple decides to adopt a child to overcome the loss of their third child whom they lost to an accident. They adopt a boy who is visually impaired, hoping that raising him would make up for the insufficient love they gave to their lost child. The adopted boy has an acute sense and begins to notice that there is another presence in the house. He discovers that the presence is a boy who died a year ago and summons him back to the family. The mother gets obsessed with communication with her lost child. The father and the other children believe the adopted boy is lying, and start to fear the mother's growing obsession toward her lost child and the adopted boy. The children feel compelled to tell their parents about the secret about the lost child, which changes everything for the family.