As incidents of domestic violence, infant abandonment, running away from home, and delinquency increase daily, the state implements a system called the Parental Qualification Test TOQOP as a means to protect families. It's a system that verifies parental qualifications through a test, similar to a GED, and only those who pass are allowed to raise children. As expected, amidst much social controversy, the weaknesses of the newly implemented system are apparent everywhere. Nevertheless, Eun-ju's household, which has an 18-year-old high school daughter, is in a state of emergency due to the system's implementation.