Genius chef and restaurant owner Heemin hates relying on others so much that he's called “Mr. On My Own”. Being known as a no-fluff, values-over-looks guy is all good in the workplace, except it means he has to hide an integral part of who he is... The fact that he's a diehard fan of the K-pop group, Emotion! To be specific, Heemin is obsessed with Jeong-woon, but at a meet-and-greet, one of the other members, Yiyeon, keeps chatting him up. There's no room for another #1 in Heemin's heart... or is there?