Mission: Possible

Chinese secret agent Da-hee is tasked with probing a case involving the smuggling of a significant cache of illegal weapons into Korea. During her mission, she teams up with Su-han, who is meant to assist her. However, his ineptitude leads to frequent squabbles over minor issues. As the investigation progresses, their situation takes a dire turn when their witnesses are unexpectedly killed, making Da-hee and Su-han the main suspects in the case.