three boys are desperately struggling to “make” a girlfriend in their sad adolescent lives. they then realize that their classmate, ghang han-gyul – the manly, serious, quiet person of their class – has been secretly going out with a beauty for 100 days*. this triggers the friendship between the manly, serious han-gyul and the three dateless losers. *a 100 day celebration of a relationship is seen as very significant.