The author, who as a teen interviewed the fledgling band on their first U.S. tour, takes us from their upbringing in war-torn Northern Ireland, to their dominance over the music scene in the early 1990s, and then to their role as spiritual ambassadors to post-9/11 America. Throughout we get a picture of the spirituality that flows out of U2's music and how their influence has spread beyond music into issues such as AIDS activism, debt relief for developing nations, and the crisis in Darfur.