Ten years into their marriage, an unexpected event strikes the couple's daily life. The husband delivers a shocking confession—joining a new religious movement that claims to bring happiness to married couples. His wife, Emiko, gradually becomes drawn into the faith. However, the religion's leader and executives insist that Emiko is possessed by an evil spirit, and initiate a horrifying ritual that begins to destroy their marriage. What is their true objective? As the couple's bond begins to crumble, a dark secret buried within Emiko's heart slowly comes to light.