As she travels across the US during the Black Lives Matter protests and Covid-19 pandemic and then to Trinidad and Tobago to attend the funeral of her grandmother, Brown tells her own life-story, as well as writing about race, gender, sexuality, and education, and ideas of home, family and healing. Both a radical political manifesto and a moving memoir about finding your place in the world, Blackgirl on Mars is about what it means to be a Black and Indigenous woman in Europe and the Americas in the twenty-first century.