A girl vanishes while walking, leaving her family devastated. As months pass without clues, rumors about her mother’s actions intensify online, straining her marriage.

In 1879, Kenshin and his allies face their strongest enemy yet: his former brother-in-law Enishi Yukishiro and his minions, who’ve vowed their revenge.

Detective Ma Seok-do changes his affiliation from the Geumcheon Police Station to the Metropolitan Investigation Team, in order to eradicate Japanese gangsters who enter Korea to commit heinous crimes.