Oh My God I'm Black tells the story of Menan, born to a Torres Strait Islander mother and white Australian father. Following her mother's death and father's desertion, Menan and her sister are brought up in Melbourne by her grandmother. As she grows up, Menan, feeling increasingly alienated, embarks on a quest to trace her origins back to her mother's home. Much of this is expressed through Menan singing songs her mother taught her, songs from the radio of her childhood and songs from the islands — all about departure, love and belonging.