Eun-soo is a housewife, who struggles to pay for her husband's medical expenses. He is terminally ill. Eun-soo becomes entangled in a bag of drugs with a teacher named Yi-kyeong. He is a mysterious figure. Eun-soo and Yi-kyeong are chased by veteran detective Tae-gu.
Cha Su-yeol, a police officer who has long despised his mother, the notorious 'Mantis' serial killer, must reluctantly turn to her for help when a copycat killer emerges.
Korea’s most skilled divorce solver and an eccentric lawyer who provides solutions for troubled marriages, punishing unfaithful spouses in the process.
Yu Kyung is a successful woman who is proficient enough to become an executive director of Chunha Group when she started as a secretary. She recently found out her daughter is alive, so she plans to get her back and take her revenge. Meanwhile, Hye Soo is a strong girl who faces challenges head-on. She has a daughter with Ji Ho, and she would do anything for her. However, she gets tragically betrayed by Ji Ho, the love of her life, over power and money. How will those two mothers end their fierce revenge?
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.
Mysterious cases take place at an apartment complex which is about to go under reconstruction. Lee Goong-Bok is a real estate agent that works with apartments there. She has a meddlesome type of personality. In Cheol-Ho is a veteran detective.
A high school boy falls off of the top of a building and lapses into a coma. A detective and his school teacher attempt to get to the bottom of the incident.
Tae Pyeong is a prophet. When he looks into someone's eye, he can see the moment right before they die. Tae Pyeong is smart, rich and handsome. Despite his special ability, he is a bright person. A mysterious serial murder case draws Tae Pyeong's attention. He partners with Detective Joon Young to solve the string of murders.