Ki Young and Young Hee have been work colleagues and best friends for nine years. Now that they have reached their early 30s, 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 out more about her past, he becomes increasingly hesitant. Goo Byung is athletic, intelligent, and humorous, but bad rumors about Young Hee spread around the office as the two get closer.