"Once Again" is the story of the eventful Song family who can’t get a day of peace and their neighbors in Yongju Market. Frugal father Song Young Dal and nagging mother Jang Ok Boon have been married for many years and have 4 adult children: stuntman Joon Sun, housewife Ga Hee, pediatrician Na Hee, and intern Da Hee. The third child Na Hee works with her fellow pediatrician husband Gyu Jin at the same hospital. They fell in love during their medical school days and got married, but they have since drifted apart and their married life is not doing well. Meanwhile, the first child Joon Sun and second child Ga Hee are both divorcees and have returned to live with their parents, while the youngest child Da Hee is engaged to be married soon. Partway, mysterious kimbap restaurant owner Kang Cho Yeon joins the fray and opens up shop in the Yongju Market. How will her appearance impact the other characters? (Source: AsianWiki)