Birds Fly Back to the Nest

A dysfunctional family is forced begrudgingly into an instant reunion when they have to move their father's grave due to construction. Hye-yeong receives a letter of notification that her father's grave should be forcibly removed due to modernization projects. Hye-yeong and the sisters are gathered in a long time, but only the brother cannot be reached easily.

The world has been reduced to rubble by a massive earthquake. While no one knows for sure how far the ruins stretch, or what the cause of the earthquake may be, in the heart of Seoul there is only one apartment building left standing. It is called Hwang Gung Apartments. As time passes, outsiders start coming in to Hwang Gung Apartments trying to escape the extreme cold. Before long, the apartment residents are unable to cope with the increasing numbers. Feeling a threat to their very survival, the residents enact a special measure.

Kyung-ah works as a caregiver and lives alone. The only one she can rely on is her daughter, Yeonsu, but it's hard to see her after her independence. Meanwhile, Yeonsu, who was suffering from his ex-boyfriend, argues with him again and heads home. After Yeonsu left, Kyung-ah receives a shocking message.

Welding engineer Cheol-taek is diagnosed with terminal cancer one day. This news begins to affect not only his only daughter Jeong-mi, who works as a bit-part actress, but also the lives of Hyun-sook, who had effectively divorced Cheol-taek and was enjoying retirement after finishing her career as a civil servant; Ok-nam, Hyun-sook's mother approaching her nineties; Cheol-taek's older brother Kwan-taek; and Kwan-taek's grandson Dong-min.

Min-kyu, who is on vacation from the army, is busy dressing up without having time to spend the night with his mother. Min-kyu borrows his mother's car and goes camping with his friend Dong-wan.