Unforgivable explores the relationship between Alice, a Tutsi woman who lost her child and her hand in the genocide against the Tutsi in 1994, and Emmanuel, the Hutu man who attacked her and her family. After serving his prison term, Emmanuel seeks out Alice and confesses to being the one who cut off her hand.

Alice extends him forgiveness and together, they run the Ukuri Kuganze Association, providing housing and counseling for genocide survivors and facilitating reconciliation between them and their former attackers.