Oh! Boarding House. Soul-won lost every penny of the 100 million won that his mom lent. And to make matters worse, he gets fired from his job. His mom forgave him on condition that he hand over her job as running a boarding house. Then she left for a trip overseas. All of a sudden, Soul-won becomes the owner of the boarding house. From the very first day, a great deal of trouble happens. Wang Ye-min who is so sensitive that he complains all the time makes Soul-won feel uncomfortable. On top of that, Soul-won’s cousin, Jae-woo is mean to him in all respects. How come a new border doesn’t show up late at night? And, the new boarder knocks out a sneak thief cold and astonishingly appears in the long run…. Five men starts living together in the Fifth Boarding House this way!