The eldest of the Yeom family, Yeom Ki-jeong (Lee Aier), the second Yeom Chang-hee (Lee Min-ki) and the youngest Yeom Mi-jeong (Kim Ji-won), who live in Sanpo City, Gyeonggi Province, have to go back and forth to Seoul every day. They have to go out at 7 a.m., have dinner parties and catch the last bus home. They are fed up with the same adult life day after day and decide to find a sense of accomplishment and freedom in their ordinary life. The mysterious man Gu (Sun Seok-gu) who suddenly came to work in their house also started a life of liberation to escape from the present with the three siblings.