A story about three people, who at some point in their lives found each other, for reasons not as pleasant as anyone else's. I think we can say that the three met because of the misfortune that fate gave to them. She lost her parents very young and on that same day he also lost his in the same accident, years later the two meet, she as secretary and he as CEO of the company, each of them lived with their grandparents after the accident. When she least expects it, she discovers the sad reality that fate has for her. On that day, which she wished she had died instead of her parents, she meets a stranger, a stranger who, with his words, will make her fight for life and believe in destiny, that nothing happens by chance. What is the probability that two people who don't know each other from anywhere will meet again in the middle of a huge city, with lots of people that is Busan? What if they really meet? What fate awaits these 3 souls who have already suffered too much in this unfair world?