Major crimes unit detective Seong-jin arrests Tae-sung for petty crimes, but shocked to find out that he is the notorious serial killer. However, Seong-jin becomes doubtful of his identity as the serial murder case is investigated.
Il-bum works hard to pay off his daughter’s hospital bills but one day gets fired for being wrongly accused as a molester. After series of failures, Il-bum finds a job at a PR company which provides free entertainment to old women in exchange for buying their products. Il-bum feels shameful to play dirty tricks on old women but he has no other choice. Despite his initial concerns, Il-bum starts to feel a sense of worth entertaining old women. A new team member, Ok-nim joins and Il-bum becomes a good friend to her, making her feel warm and safe which she never gets from her own son. But, the joy of their friendship won’t hold long when Il-bum’s debt reaches beyond help.
Aeja, a struggling writer, nears 30 and looks for her next big break. She has always counted on her mother's tough love to straighten her out, until her mother suddenly collapses.
Kingdom of Joseon, ancient Korea. A usurper has conquered the throne. His ministers are being systematically eliminated by a mysterious assassin. An arrogant master swordsman is in charge of putting an end to the carnage.
