Sweet and easygoing Eun Ho (Yoo Jin) grew up in a normal middle-class household with a strict and traditional father. Willful plastic surgeon Ki Baek (Ha Suk Jin) was born into a wealthy family, and has the ego to match his income. Their two worlds collide quite literally when they meet through a paragliding accident. It's a classic case of opposites attract as they fight, falter, and fall in love, but their incompatible families are determined to break them apart.
Detective Chung-su takes a secret mission from a dying president of a big company. The businessman wants to see his first love before he dies.The only information the detective has is that the man’s first love’s name is Kkotnim and she now lives on an island called Tongbaek, off one of the country’s southern ports.
He rides on a private boat to the island with an anonymous passenger, dreaming of the big bucks he will get when he completes his mission.But the boat is wrecked in a fierce storm, and Chung-su and the passenger find themselves lying on the shore of a strange island.
In the struggle to escape from the island, Chung-su meets up with the same five strong-willed grandmothers who had given him trouble two years ago in the original, and he realizes that he is back on Mapado Island.Later, he finds out that the island used to be called Tongbaek, which leads him to think that one of the five grandmothers must be Kkotnim. Now he begins to investigate the grandmas’ past love stories.
This installment evolves around Mrs. Hong's family, who launches a new business of setting up a kimchi manufacturing company after putting an end to their crime-related dirty business. The new business is a huge success due to Mrs. Hong's talent in food, and her three sons and their wives help her to write a new chapter for their family history, learning what an ordinary man's life is like. But the Hongs meet a new crisis when former prosecutor Bong, imprisoned for manipulating evidences in the second installment, is released and prepares for a revenge on the Hongs, who largely contributed to his conviction. Bong, along with the help of another criminal gang come up with an idea to pay back the Hongs. He poisons the products from Hong's brand which causes the family to be on the verge of going out of business. But as Bong's simple plotsucceeds, the Hongs easily tackle the crisis in the end.
Mrs. Hong, the big boss of a powerful mafia group gives a mission to her three sons to find an elite daughter-in-law for her first son, In-Jae. In-Jae finally crashes into a beautiful lady, Jin-Kyung, who looks to be his soul mate. In-Jae is head-over-heels for Jin-Kyung. However, he finds out that Jin-Kyung is a prosecutor and the family seems to be in big danger!