Ban Christopher Chan, 25 years old, chief police officer in Seoul. His life is literally always on the line because of the challenges he receives. He's a lonely guy, and his last girlfriend cheated on him with his partner. Choi Seulgi, 23, is the chief physician/surgeon at Seoul Central Hospital. she saves thousands of lives, loves to eat delicious food, especially after work. the girl is single, not looking for a relationship.

(our time. Seoul.)

Christopher receives a call about a shooting at the mall. He and his partners are going on a call. The mall was surrounded by police and medical vehicles. Christopher and a couple of guys break into a room where one guy is shooting innocent people. The man turned around and fired at random. The bullet hit Chan's shoulder. of course, it went off on a tangent, but there was a wound. The shooter was detained. The injured began to be hospitalized on the street, there were few dead, the rest were only injured. Seulgi was doing her job. Her partner ennim shouted at her

ennim: Seulgi, there's a wounded policeman, you're better at it, look what's in there.

"okay, sweetheart. Take care of this girl."

Seulgi said before walking to the police car. They showed her the victim.