During a summer vacation, Ok-ju and Dong-ju move into their grandpa's house. While Dong-ju adapts to his new home, Ok-ju feels awkward about this new environment. Once their soon-to-be-divorced aunt also moves in, and as Ok-ju spends time with her family, the house and her grandpa start to grow on her.

A group of unlikely heroes from across the Korean peninsula try to save the day after a volcano erupts on the mythical and majestic Baekdu Mountain.

Yoon-young fell for Song-hyeon when she was married to his friend. When she gets divorced, he takes her on a trip to Gunsan, where they stay at a guest house run by a middle-aged man and his autistic daughter.

For the first time in Korean history, the mayor of Seoul attempts a third term in office, with his entire campaign team ready to soil their hands.