When a renowned shaman (KIM Go-Eun) and her protégé (Lee Do-hyun) are hired by a wealthy, enigmatic family, they begin investigating the cause of a disturbing supernatural illness that affects only the first-born children of each generation. With the help of a knowledgeable mortician (YOO Hai-jin) and the country's most revered geomancer (CHOI Min-sik), they soon trace the affliction's origin to a long-hidden family grave located on sacred ground.