Firefighter Ho Chul accidentally witnessed the crime scene of the Rich Girl Killer while on duty two years ago. He was the only witness to the murder and suffered from the trauma.
The person who kidnapped Soo A tells Ho Chul that he has 24 hours to find the serial killer and kill him. If he fails to kill him, he may see his daughter as a corpse.
Ho Chul pays a severe price for going against the rules, and Dong Ju dies at the hands of Tae Jin. Ho Chul realizes that the only way he can save his daughter is to follow Tae Jin's orders.
Ho Chul gets falsely accused of the security guard's death and is a fugitive on the run. He must remember the Rich Girl Killer's face to save his daughter, Soo A.
After being held captive by Tae Jin, Soo A is now in the hands of Si Woo. Ho Chul, who is shocked and panicked, chases Si Woo down. But with Soo A at his mercy, he is powerless.
Ho Chul joins forces with Si Woo and betrays Tae Jin to save his daughter. Ho Chul helps Si Woo, who is holding Soo A captive, slip through the police's hands. As Si Woo escapes, he tells Ho Chul where he can find Soo A.
Ho Chul witnesses Jung Hye fall into the hands of Si Woo. Ho Chul is in a complete wreck now that Tae Jin has Soo A and Si Woo has Jung Hye. Jung Hye improvises and leaves Ho Chul a clue, and he heads to rescue her.
Ho Chul rescues Soo A. However, Tae Jin and Si Woo appear together in front of them. Ho Chul and Soo A make a run for it to escape falling into their hands again. The chase is on.
