Lee Jakyeong is a hitman renowned for never missing his target. He trusts his skills implicitly and takes any job, no matter how difficult it may seem. As long as he gets paid, he will get the job done. But one day, he is hired to eliminate Kang Il-Hyeon, the heir to a powerful criminal empire, and retrieve items from his personal vault. Despite his expertise, the target proves far more dangerous than expected. Lee Jakyeong is sharp, alert, and ready for the mission, but his caution leads him straight into a trap set by Kang Il-Hyeon, leaving him cornered by the very man he was sent to kill. Now, all that remains is to see how this tense and dangerous relationship will unfold.