The veteran detective Seo Do-cheol and his team at Major Crimes, relentless in their pursuit of criminals, join forces with rookie cop Park Sun-woo to track down a serial killer…

In the ultimate test of marriage, an agent-turned-househusband gets tangled in a perilous mission with his detective wife, who’s clueless about his past.

During the Japanese colonial era, roughly 400 Korean people, who were forced onto Battleship Island (‘Hashima Island’) to mine for coal, attempt to escape.