Isaac's only friend is a Passenger Pigeon named Bandy. He deludes himself in believing the bird talks to him. Bullied, he is resigned to a life of being the misunderstood bookworm by neighboring boys until a disastrous fire kills his parents and little sisters, sparing only his younger brother, Thomas. He and Thomas are taken in by their Uncle Raymond, an abolitionist, who plans to send Isaac to Virginia to buy Joy, a young slave with debilitating health, from her slave owner, Wil Jericho. Shortly after arriving in Virginia, Isaac learns the ugly truth. The butler who accompanied him on the journey killed his uncle before leaving and plans to do the same to Isaac to steal Raymond's estate. Isaac, with Joy, escape into the backwoods of Virginia. Discovering passages of the Underground Railroad, stowing away in carriages, hiding in churches, and outwitting the mercenaries hired by Jericho, the two teens fight tooth and nail to make it to Boston before they're caught. Will Joy be taken from this life by sickness before she's found freedom? On their journey, they learn a lot about each other. Isaac promises to bring Joy to Bandy's pond, a heavenly place where peace and serenity reign.