Nearly 30 years ago, two young Irish pop singers set out to challenge the world. Their aim: to use their celebrity status to end poverty in Africa. Their work has made them icons of aid, and even garnered them Nobel Peace Prize nominations, but what impact has it really had on Africa? Through archive footage and candid new interviews with key players, including Bob Geldof, Bono and Bill Gates, the film re-examines three decades of unprecedented campaigns, and scrutinises the effectiveness of celebrity-led activism.