Sungjoon's not doing great, but life is looking up. His job at the convenience store pays enough for him to afford his own place. A tiny, smelly, and laughably cheap place, but he loves it. He loves it right up until he walks home and finds it on fire.

Unfortunately, things get worse as he realizes he doesn't know anyone in the city who can help. Wait, no… that's not right. Actually, he does know Lee Hyo-in. A rich kid from his university who is, coincidentally, looking for a roommate. Well, not a roommate. More of a… dog.