Three shots are fired and the president of South Korea suddenly goes missing from his vacation villa. Three Days is a condensed-time thriller that follows the struggles of elite Blue House bodyguard Han Tae Kyung to find and protect the president. With the aid of local police officer Yoon Bo Won and fellow Blue House guards, will Han Tae Kyung be able to save the president before it’s too late?

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.