Eden Jang's often been mistaken for a foreigner or a Korean who's lived abroad due to his appearance. One day, on his way to school in a new neighborhood he's just moved to, a 10-year-old Eden is confronted by foreigners who seem to think he's just like them. But being also lost and tired, he gets flustered and goes into a state of panic. It's then when a total stranger, Sarang, shows up and saves him. Coincidentally, Sarang lives next door to Eden, and the two become close like real brothers. To Eden, Sarang is the older brother-like figure he looks up to. He tags along Sarang wherever he goes, just like a puppy would its owner. But as Eden grows older, he realizes his feelings for Sarang were far more than just brotherly love. Unable to suppress his feelings any further, Eden ends up kissing Sarang on a live internet channel when he's drunk. The dynamics between the two change, and Eden becomes bolder, making sure Sarang knows how he feels. Will Sarang reciprocate his love? Is Eden merely like a younger brother to Sarang, or does he also have feelings for Eden?