Laura Price, a local news producer in San Francisco, is helping the police to hunt down a serial killer. After the killer strikes close to home, a twist of fate allows a “Groundhog Day”-type reset, and Laura relives the week prior to the string of murders. Can she change fate and stop the killer?
Although born in the same year, two childhood friends end up being 13 years apart because they have aged surprisingly at different places (worlds) for some strange reason. Now Eom Hyeon Soo is a 31-year-old woman but Sung Hae Sung is still a 18-year-old boy. Cha Won Yooung is a chef also interested in Eom Hyeon Soo.
Song Soo-Jung is an arrogant pop star who believes not only that status and money can get you anywhere, but that it defines your worth. She accidentally falls into a time-slip portal and travels back in time to the Joseon era where she meets On-Dal, a man who loves money yet is generous to those without.
Woo Ah-Jin lives a luxurious life due to her wealthy father-in-law, but her father-in-law's finances become decimated and her husband betrays her. Woo Ah-Jin's life hits rock bottom. Park Bok-Ja is a mysterious woman and she hides her heartbreaking story. She brings about fierce hardship on Woo Ah-Jin.
Hwang Shi Mok underwent brain surgery as a child to curb his violent temper, which left him devoid of emotions. Hwang becomes a prosecutor known for his piercing intelligence and logic, but he is ostracized because he lacks empathy and social skills. He is also one of only a handful of upright prosecutors who have refused to take bribes. One day, he encounters a stabbing victim while investigating corruption. He meets Lieutenant Han Yeo Jin at the crime scene. They join forces to root out corruption at the prosecutors’ office and solve a serial murder case.
In a small quiet village in the Ardennes, a sixteen-year-old girl disappears into the forest after calling her teacher in the middle of the night. Captain Gaspard Deker, a former soldier and newly arrived single father is conducting the investigation with Virginie Musso, the local cop. Also helping is the teacher, Eve Mendel, a solitary young woman with a mysterious past: she was found as a child by the villiage doctor wandering silently in the same forest.
Noh Ji Wook is a prosecutor in the Central District Prosecutors’ Office who ends up switching professions to a private attorney. He harbors a trauma stemming from an event in his childhood involving his parents and his first love. Eun Bong Hee, a Taekwondo athlete in her youth, is a prosecutor trainee who has become a murder suspect. Eun Bong Hee and Noh Ji Wook both find themselves being the focus of a killer.