In the 15th century, despite so many accomplishments he has made for the people, King Sejong, his biggest goal is still remaining; the invention of original letters that can be read and written by all the people. But courtiers who want to dominate the knowledge and the power, are against his will and discourage his belief. Frustrated King Sejong hears about a bonze Sinmi a phonogram expert, and secretly brings him in the palace…

A kidnapper disappeared 15 years ago without a trace. Five days before the case’s statute of limitations expires, someone anonymously leaves a flower at the crime scene. A few days later, another kidnapping takes place using the same method on a similar target.

On the day the 15-year statute of limitations expired on a high profile serial murder case that claimed the lives of 10 women, a family member of the victim throws himself off the building in front of Choi Hyeong-goo, the detective in charge of the case. Two years later, a man called Lee Doo-seok publishes a book titled “I am the Murderer” claiming responsibility for the murders that took place 17 years ago. His book becomes a bestseller because of the author’s charming looks and his vivid depiction of the crime. The detective and the self-proclaimed murderer meet face to face on a television debate show. Believing that Lee is nothing but a con artist, Detective Choi renews his search for the ultimate truth. Then another man appears suddenly, claiming he is the real killer.

Je-In (Ha Ji-Won) is a mystery novel writer. She chases after a serial killer with her longtime friend Rok-Hwan (Chun Jung-Myung). Rok-Hwan is a detective. A handsome and mysterious man, Jason (Chen Bolin), appears in front of them. 

A young girl is raised as a killer in the Yanbian province of China. She hides her identity and travels to South Korea where she hopes to lead a quiet life but becomes involved with two mysterious men.

Having died unexpectedly, firefighter Ja-hong is taken to the afterlife by 3 afterlife guardians. Only when he passes 7 trials over 49 days and proves he was innocent in human life, he’s able to reincarnate, and his 3 afterlife guardians are by his side to defend him in trial.

Along With the Gods: The Last 49 Days follows the journey of 3 Afterlife Guardians and Su-hong as they journey through their 49th trial in order to gain their reincarnations and how the Guardians slowly recover their forgotten memories through Household God in the living world.

Dong-Chul and Ji-Soo are a happily married couple. One day, Dong-Chul comes home to find his house in disarray and his wife is missing.