Blood Pledge

Four good friends in a Catholic girls’ high school – Unjoo (Jang Kyeong Ah), Soy (Son Eun Seo), Eugene (Oh Yeon Seo) and Eun-young (Song Min Jeong), who swear their friendship with blood one late night at chapel within their school compound, promised each other that their bond will last through death, so much that they are even willing to die together. Strange rumors start to spread at the girls’ school after Unjoo committed suicide one night. Unjoo’s younger sister Jung-un (Yoo Shin Ae) who attends the same school gets suspicious about Unjoo’s death. The remaining friends are then chased by death as their promise weighs heavily over them. Will the desire and jealousy that lies behind the pledge of death between the four girls unravel, along with the truth behind Unjoo’s suicide?