"Detective K: Secret of the Banchon Detective" is a South Korean film that combines elements of comedy and mystery. Set in the late 19th century, it follows the adventures of Detective K, a clever and resourceful investigator. He is tasked with solving a series of mysterious murders that have shaken the peaceful village of Banchon. As Detective K delves deeper into the case, he uncovers a web of secrets and hidden motives among the villagers. With the help of his loyal companion, Seo Eun, he navigates through various challenges to reveal the truth behind the crimes, showcasing his wit and determination along the way.