Kim Hanbin is an underground rocker, wild and young. He is rebellious and does not care about the world or the people in it except for a boy with a heart shaped mole. Kim Jinhwan has always been the guardian and protector of the young rocker, a pillar of motivation and a cocoon of warmth. But what if a sudden twist of fate reversed their roles and the protector becomes the one who needs to be protected? Will it crumble down whatever they had built or will it give a new meaning to their life?