Lee Heesu was content with being in the background. As long as he had Joo Chanyoung, all was right in his world, even though Chanyoung put his girlfriends first than his childhood friend. However, suddenly, people started noticing him. At school, kids would ask him for advice. Even Lee Seungwon, who resembled a robot more than an actual human and moved into the house right in front of Heesu's where Chanyoung used to live, asked to help him find a date. After their brief conversation, Heesu realizes that they have one thing in common: they both have a huge crush.