Lee Seul-gi

Four friends pledge to commit suicide together but while standing on the ledge, only one of them actually jumps. Her ghost begins to haunt the remaining friends until the pledge is fulfilled.

Eun-Chul (Park Ji-Bin) and Eun-Ha (Lee Seul-Gi) lives in a small village. They are the only family they have. One day, stubborn Eun-Ha begins to beg Eun-Chul to go and see a whale. Eun-Ha follows Eun-Chul all day long and keeps talking about the whale. To quiet her, Eun-Chul makes a false promise. Eun-Ha has a disease which is eroding her vision. Adults tell them that Eun-Ha should be sent to a good facility, but Eun-Chul can't separate from his sister. Eun-Chul decides to show a whale to Eun-Ha before she loses her vision completely. They begin travel from Namwon to Jangsaeng where they can see a whale. They travel their by bicycle. Along the way to Jangsaeng, Eun-Chul and Eun-Ha meet Duk-Soo (Lee Moon-Sik). Eun-Chul and Eun-Ha have a warm feelings towards him like the father they never had ...