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.