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.
Eugene
Unjoo
Soy
Eun-young
Jung-un
Ju-yeon
Jung-yoon
Min-ju
Mi-so
Bo-yoon
Ji-mi
Hyun-jin
Hye-in
Ki-ho
Nun
Computer Teacher
Eun-young's father
