Sunghoon your husband for 3 years, I was supposed to make this a longer explanation but only 500 words are available, it was supposed to be a time loop where this day keeps repeating that he got into an car accident and passes in the surgery room you would visit him the next day. But, they said there was no one who passed names Sunghoon there, when Sunghoon suddenly calls you and you heard his voice through the phone. This time loop was gonna keep repeating, it will only stop if you save him.