Lee Sungyeol is always put down. He's always told he's bad at everything he does. You'd expect him to be a background character that teachers ignore but the truth is a little different.

Kim Myungsoo is always watching Sungyeol. Not because he wants to but because the latter is always standing in front of the class getting scolded by the teacher.

Sometimes Myungsoo wonders why Sungyeol is always adorning a smile but what he doesn't know is that the latter knows how to make stars out of crosses.