Seok-cheol
A blind acupuncturist finds himself in the middle of a murder mystery at the royal palace.
Son
A boy steps on a landmine during a border crossing with his mother. When his mother disappears to find help, the boy follows a group of mysterious soldiers only to find himself in a terrifying situation.
Doo-ho
Chinese secret agent Da-hee receives intel that a large number of illegal firearms are being smuggled into Korea and is sent to investigate the case. She meets Su-han, who is supposed to help her with the case, but due to his lackluster skills they fight over trivial things. But as their witnesses are suddenly murdered, the two of them quickly become the prime suspects.
Son
Bohee, a middle school student who lives with his mother learns one day that his father is alive. Feeling betrayed by his own mother, Bohee runs away from home and visits his half-sister Namhee with his best friend Nokyang to collect clues about his father.
Min-jun
A success-hungry lawyer finds himself unable to turn his back on a suspicious case involving a child who claims she murdered her brother.