Sia had been exceptionally looking forward to moving in with her best friend for college. She and Daniel had been friends since she was 4 and he was 6. So when he suggested her to move in with him she had thought of it as a brilliant idea. College was so far away from her home, she'd save herself a lot of time moving in with Daniel. Daniel and Sia had already figured they'd need a third roommate to help pay the bills and that's where Kang Dongho enters the game.