Ki Young and Young Hee have been work colleagues and best friends for nine years. Now that they have reached their early 30's, it is time to get married, and both of them try their best to find a marriage partner. Ki Young reunites with his first love Kye Shin, but as he finds more about her past, he becomes increasingly hesitant. Goo Byung is athletic, intelligent and humorous, but bad rumours about Young Hee spreads around the office as the two get closer.Will Ki Young and Young Hee's marriage project succeed?