Why is it him? Gang Soo (Kim Nam Gil) is an insurance examiner who is still grieving the loss of his wife. Although back at work, he is just going through the motions and suffers from depression. When Gang Soo is assigned the case of a woman who is comatose after being struck by a car insured by his company, Gang Soo goes to visit the woman in the hospital. There, he meets Mi So (Chun Woo Hee), the woman who is in a coma. However, she is next to Gang Soo and talks to him. It’s not long before both Gang Soo and Mi So realize that Mi So is still in a coma and her spirit is communicating with Gang Soo. Desperate to get help, Mi So realizes that Gang Soo is the only person who can see her and there is something she needs him to do for her. “One Day” is a 2017 South Korean film written and directed by Lee Yoon Ki.