Detective Jin Ho-gae, who pursues his targets to the ends of the earth, encounters an unexpected kidnapping case on his first day of work and launches a joint operation with the fire department.

While waiting for a serious case, Ho-gae takes on a case where a victim died from drinking pesticide. After finding suspicious traces at the site, he establishes a new hypothesis.

The police and firefighters assist Ye-seul, a victim of a car accident, and quickly prepare to transport her to the hospital. However, they go into crisis mode when they can't find Ye-seul's pulse.