Robyn is a teenager that lives in a MBTI society. Each person is assigned one of the fifteen personality types once they turn a certain age, and they will spend the rest of their life with people of their same personality type. There used to be sixteen personality types, but the INFJ type only consisted of rebels that tried to overthrow the government, so the government destroyed all of the INFJs. But, when Robyn is sorted, something unexpected happens.