Park SoMin, a normal girl that goes to high school like everyone else, one day moves to an apartment for 3 months not knowing who was next door. Working as an makeup stylist she bumps into the famous Eli from U-kiss and immediately hates him due to his stuck up attitude. While walking home from grocery shopping one day she sees him following her but to her suprise he lives right next door to her. They create problems for eachother making it awfully difficult for them to live but what they both don't know is that they are falling for eachother faster then a rock sinking in water.  When one person gets taken away What happens when one realises too late? Will they run and find her? Or sit down crying over the loss.