Don't come over the line just because you did one night! Autumn has come to spend one night with the wrong guy. When I found out, I was in shock, but it wasn't a problem. The one night counterpart was Seo Do-hyun, his boss! He was passionate about getting a better job than his brother, but he was fooled by his friend and took on the challenge! What a surprise! But what's going on? Seo Do-hyun, the counterpart of "One Night," is really nice. He is handsome and capable, and he does a great job at night, and frankly, I don't hate him when he just walks over the line. One day, when his heart was about to fall, Do-hyun, who knows the age of autumn, said goodbye and left…!!!