Sink & Rise (2004)

Original title: 싱크 앤 라이즈

Under the Sungsan Bridge, in a waterside stand by the Han River, a poor and tired-looking father and daughter, Jae-mun, and In-seon, are arguing the generation gap over whether to buy boiled eggs or instant crackers. The stand owner Hee-bong hears Jae-mun suddenly declare that boiled eggs float.