This is the extraordinary story of Chelsea Manning - trans woman activist and ex-army intelligence officer. Sentenced by President Obama in 2017 to serve 35 years in a all-male maximum security prison for national treason, she has been accused for leaking information about US war plans in Iraq and Afghanistan. The documentary follows Chelsea while she is sharing her traumatic experience in a family of alcoholic parents, the subsequent mental health issues she has to deal with, and all the struggles related to her transformation from a soldier to a trans woman. By the way, the XY in the title stands for the sex chromosomes of the males in nature. Females have XX chromosomes - two of the same kind.