A young African boy named Kimbo was kidnapped while on a hunt with his father. From the jungle, he's taken to a trading post, an island slave stronghold, and then he's sold to a company that sends him through the Slave Trade Triangle on a cramped ship bound for America. The ship suffers a storm, a mutiny, and many needless deaths, but Kimbo survives the journey, only to be sold as property to various owners in nineteenth-century Virginia. Eventually, he gains his freedom, through the help of a minister. On his journey to freedom, Kimbo escapes captivity, rescues a lost white girl, gets caught by a paddy roller, and eventually finds real freedom at the cross. With the help of the American Colonization Society, he returns to Liberia, Africa, with most of his family, to carry out his ministry. The Slave's Diary is the story of a man who chronicled his life as a slave in America, going from master to master, but making friends during his trials wherever he finds them, and finally gaining his freedom through a minister who helps him adjust to life as a free man.