As teenagers in a Lagos secondary school, Ifemelu and Obinze fall in love. Their Nigeria is under military dictatorship, and people are leaving the country if they can. Ifemelu – beautiful, self-assured – departs for America to study. She suffers defeats and triumphs, finds and loses relationships and friendships, all the while feeling the weight of something she never thought of back home: race. Obinze – the quiet, thoughtful son of a professor – had hoped to join her, but post-9/11 America will not let him in, and he plunges into a dangerous, undocumented life in London.
Years later, Obinze is a wealthy man in a newly democratic Nigeria, while Ifemelu has achieved success as a writer of an eye-opening blog about race in America. But when Ifemelu returns to Nigeria, and she and Obinze reignite their shared passion – for their homeland and for each other – they will face the toughest decisions of their lives.