Dark Against the Sky is the story of a band climbing boys in London in 1834. The arc of their adventures follows the main character, Tommy, as he struggles to find and be re-united with his father, faces the daily challenges of life as a climbing boy ruled by callous master sweeps, and interacts enjoyable with friends and street folk. Though his story is often darkened by his work an the period, it is brightened and ultimately redeemed by his growth in his journey and the humanity he shares with his "band of brothers."