In a home where a couple lived happily together, the husband's stepfather suddenly appears. Unlike his responsible husband, the stepfather has a reckless and irresponsible personality, coming only to demand money. One day, he breaks into their house while they're away. When the wife returns and confronts him, an unsettling tension fills the air, shaking the foundation of their peaceful life. The sudden intrusion of the stepfather brings an unexpected shift in the couple's relationship, sparking a series of disturbing changes.