After long and grueling hours immersed in brutal crime investigations, lead detective Choi Young Jin must face the particular horrors of singlehandedly raising her daughter Ha Eun. Any way you look at it, Young Jin's got her work cut out for her, but it's only a matter of time before her professional and personal worlds collide in new and disastrous ways.
The mysterious disappearance of a girl brings together seven people from all different walks of life. They all have an intertwined connection to her disappearance in the most horrific, unfathomable, and despicable way. As money drives them to their greed, lies, and delirium, they face divine retribution as they struggle for their lives in a picturesque revenge. How far will they go to claim their innocence, and will anyone make it out alive?
Jo Jin-Gab was once a promising judo athlete. He protested against corruption at a game and he was kicked out of the sport. After that, Jo Jin-Gab became a gym teacher. Again, he could not control his anger against the son of the school's chairman. Jo Jin-Gab was once again kicked out of his profession.
Goo Jae-hee lives in the United States and one day sees a track and field competition on TV, and becomes attracted to one of the high jump competitors, Kang Tae-joon. She begins to idolize the young athlete and eventually transfers to Korea to attend the same school that Tae-joon attends after he suffers an accident that could potentially end his career. There is a catch, however: Tae-joon attends an all-boys high school and Jae-hee must disguise herself as a boy to enter.
Kim Seo-Jin is a man who is driven only to achieve success in his life. Thanks to his efforts, he is the youngest executive at his company. His life is perfect, with his beautiful violinist wife Kang Hyun-Chae and a daughter. His wonderful life comes to a halt when his young daughter is kidnapped. He falls deep into despair. To change the past, when his daughter was kidnapped, he contacts Han Ae-Ri approximately one month in the past.
Han Ae-Ri has busy days with her studies and working a part-time job to make enough money to pay for her sick mother's operation. One day, her mother suddenly goes missing. Han Ae-Ri falls into despair, when Kim Seo-Jin from the future contacts her.
Jang Tae San is a man who has been living a meaningless life and never thinks toward his future. He is on the run after being falsely accused of murder. Furthermore, he discovers that he has a daughter who is now suffering from leukemia. The drama spans exactly two weeks, and tells about Tae San's desperate struggles to save his daughter.
Cha Yo-Han—an arrogant but genius doctor of anesthesiology—and Kang Shi-Young—a smart, warm resident of anesthesiology—work together to help people with mysterious cases of acute or chronic pain.
Choi Kang Chi is a half-beast and half-human and was adopted by a merchant Park Mu Sol when he was a infant. Kang Chi has a kind of unusual power. Dam Yeo Wool is the daughter of Dam Pyeong Joon who is the owner of the Invisible Knife Moo Kwan and also a patriotic warrior. Kang Chi and Yeo Wool meet and fall in love with each other. However, there is hatred between their fathers. Jo Gwan Woong is a traitor. He uses his power to frame faithful and upright individuals and obtain profit for himself. His criminal plots are destroyed by Kang Chi time and again. Therefore, he is determined to kill Kang Chi through different ways. Kang Chi is troubled by his identity but stands up for justice.
Park Jung-Woo is a prosecutor at Seoul Central District Prosecutors' Office. One day, he wakes up and finds himself in locked up at the police station. He has temporary amnesia. Park Jung-Woo is falsely accused and is sentenced to death. He must struggle to prove his innocence.
A work about the delightful and heartbreaking story of a family growing up while raising a child, centering on a single dad Geum Kang San and adopted child Ok Mi Rae who is the apple of his eye.