Lee Yool falls off a cliff and nearly dies in an attempted assassination. He loses his memory, and wanders for 100 days under a new name and personality. During this period, he meets Hong Sim, head of the first detective agency in Joseon.
Air date: 2018-09-10
Runtime: 73 min
Overview: Lee Yul begins a secret investigation after growing suspicious of his worsening health. Yeon Hong-sim returns to Hanyang in search of her brother.
Air date: 2018-09-11
Runtime: 68 min
Overview: Yul uncovers the mastermind's identity and Kim So-hye's secret before coming under attack in the forest. Hong-sim is punished for refusing to wed.
Air date: 2018-09-17
Runtime: 69 min
Overview: Yul loses all memory, but gains a new identity as Na Won-deuk. Hong-sim begrudgingly chooses to become a wife to avoid life as a concubine.
Air date: 2018-09-18
Runtime: 73 min
Overview: Jung Je-yun searches for a link between the royal physician's murder and Yul's disappearance. Hong-sim puts Won-deuk to work to repay his debt.
Air date: 2018-09-24
Runtime: 75 min
Overview: News of the crown prince's passing is made public. Hong-sim is delighted to learn of Won-deuk's ability to read and write.
Air date: 2018-09-25
Runtime: 77 min
Overview: Hong-sim's reunion with her brother doesn't go as expected. Eunuch Yang notices something off about the crown prince's dead body.
Air date: 2018-10-01
Runtime: 76 min
Overview: Witnessing Won-deuk's martial arts skills, Hong-sim gets curious about his real identity. News of the queen's talisman sparks protest and debate.
Air date: 2018-10-02
Runtime: 74 min
Overview: Won-deuk celebrates an unforgettable birthday. Mu-yeon completes his final task for Kim Cha-eon and prepares to leave with Hong-sim.
Air date: 2018-10-08
Runtime: 75 min
Overview: Je-yun reunites with Hong-sim as the new county governor. To recover his memory, Won-deuk visits Hanyang and enters palace walls.
Air date: 2018-10-09
Runtime: 73 min
Overview: With Hong-sim and Won-deuk's help, Je-yun concocts a plan to get in Park Seon-do's good graces. Rumors swirl about the crown prince being alive.
Air date: 2018-10-15
Runtime: 79 min
Overview: The king tries to regain control of his throne. Hong-sim and Won-deuk settle their affairs prior to leaving. Je-yun sees Yul in Won-deok.
Air date: 2018-10-16
Runtime: 76 min
Overview: Cha-eon interrupts the coronation ceremony with a shocking announcement. Yul has trouble moving on from his memories with Hong-sim.
Air date: 2018-10-22
Runtime: 81 min
Overview: Hong-sim searches for Mu-yeon in Hanyang with her father and Je-yun in tow. Yul's competency is tested by a visiting envoy.
Air date: 2018-10-23
Runtime: 81 min
Overview: Won-deuk and Hong-sim reconnect as Yul and Yoon I-seo. Je-yun assists Yul in his quest to find his diary — and answers.
Air date: 2018-10-29
Runtime: 85 min
Overview: Having regained his memory, Yul seeks revenge on a killer in his midst. Cha-eon plans bloodshed to achieve his goals.
Air date: 2018-10-30
Runtime: 86 min
Overview: Cha-eon leaves behind his final wish. Moved by the king's hopes and Je-yun's plan, Yul makes good on his promise to I-seo.
