Orphaned 16-year-old Leodora, a talented puppeteer and storyteller, is forced to hide her identity and gender as she travels the spans and tunnels of the ocean-crossing Shadowbridge in Frost's exciting first of a diptych. Stubborn and god-touched, Leodora feels nearly friendless until she meets a youth with similar gifts. Diverus, an enslaved simpleton, is endowed with intelligence and uncanny musical abilities when an unpredictable deity visits his span. When Diverus plays and Leodora performs, their synergy creates magic and brings them instant fame. Only Leodora's mentor, the perpetually drunken Soter, realizes that their brilliance attracts dangerous chaos energy, and he must protect the young pair while keeping long-held secrets about the deaths of Leodora's parents and the dangers of her talent.