A typical day on the job for a diligent traffic cop turns into something much more. Lee Sun Ae (Nam Sang Mi) is a recently widowed traffic cop who takes her job very seriously. When she pulls over the mysterious Han Yoo Il (Dennis Oh) for a routine traffic violation, she accidentally forgets to return the man’s pen before she lets him go. Yoo Il turns out to be an international spy who came to Korea on a top-secret mission and the pen that Sun Ae has is his super high-tech spy pen that he can’t do without. When Sun Ae is inadvertently pulled into the shady world of international espionage, the Special Operations Unit also gets involved. The new chief, Kang Joon (Lee Joo Hyun), who has a secret crush on Sun Ae, opens an old case involving Sun Ae’s late husband. But why does the case also lead back to Yoo Il? “Sweet Spy” is a 2005 South Korean drama series directed by Go Dong Sun.