After her husband's mysterious death, Lastini believes a dark entity is possessing her daughter, Arum. With only five days before Arum's leap-year birthday, Lastini and her two other children journey across Java to seek help from spiritual healers. As the demon's grip tightens, they race against time to save Arum and find their way back home.

In the midst of a major bridge project connecting two regions, life after life is lost during its construction. Yuda, along with his sister and mother, infiltrates the construction company where their father was killed to prove that the project's sacrificer are real.