SHIN, a cop, is on a stakeout at Paradise Hotel in Seongju where the serial killer ‘Jackal’ is said to appear. K-pop star CHOI Hyun is staying there at the same time, where he is ambushed by a mysterious hitman, Min-jung. Min-jung is an off-the-wall hitman hired to kill Hyun by his ex-girlfriend. Min-jung is soon surprised to find Hyun is the singer of her all-time favorite song, but does not give her mission. Later, Angela, Hyun’s sponsor, comes into the room for a secret rendezvous with her boy toy, but is accidentally stabbed to death by Min-jung. Through all the wacky, dangerous events of the night, curious chemistry develops between the hitman and the target, and Hyun ends up trying to help Min-jung.