Capable tells the true story of Mohau Nhlapho, a young man with albinism. He is faced with two boys who have been sent by a traditional healer - Nkanyamba - to kill him and bring his dead body for body parts. He is strong, so when he fights them, he manages to defeat them, stabbing one of them to death with his own knife.

A case of murder is opened against him and he is found guilty. He feels judged, ill-treated and disrespected by the community, church people, traditional healers and South African justice system, leading to his tragic death.