Detective genius Detective K is enlisted by the king to investigate a string of murders that may be linked to a government conspiracy. But when K becomes a suspect himself, he'll have to catch the killers to prove his own innocence.

"Detective K" tells about the adventures of Joseon's top detective (Kim Myeong-min) as he investigates, as ordered by the King, a series of mysterious murders plaguing the country. During his secret mission, he meets Han Seo Pil (Oh Dal-soo) who eventually becomes his sidekick, and Han Gaek Ju (Han Ji-min), an influential business woman who is a key figure in the case. As they dig deeper into the mystery, they uncover disturbing secrets that link the murders to a massive conspiracy that will shake the whole nation of Joseon.—michi (MyungMin International)