A biologist and his family, including their 15-year-old daughter with ambiguous genitalia, host their former best friend and her family for a visit. The surgeon guest is there to operate on the daughter, causing tension and revealing the true reason for their visit. As the two teenage children grow closer, they share a romantic encounter, leading to further confusion about their identities and a quest to understand their uniqueness.

XXY
A teenager with an intersex condition navigates the complexities of self-identity, as her family faces the difficulties of ensuring her unique needs are met.