Trapped in the pitch-black hold of a merchant vessel, one hundred nameless slaves face a grim death when the ruthless Captain Joshua decides to drown them to save his storm-battered ship. But everything changes with the arrival of "Soot"—a fourteen-year-old runaway blacksmith's apprentice discovered as a stowaway. Welcomed by the captives as slave number 101, Soot repays their unexpected kindness by using his instincts to save the ship from a legendary oceanic dead zone. Forced into hard labor on the upper deck, Soot quietly observes his captors, works on a secret plan, and uses a rusted family heirloom to spark a revolution. Armed with nothing but a heavy forging hammer and an unbreakable bond of human dignity, one boy will challenge a tyrant, shatter his chains, and forge a new destiny of freedom for one hundred souls.