"Marie-Grace can't wait to begin her journey up the Mississippi River with her father. The steamboat they're traveling on is the biggest and fanciest boat Marie-Grace has ever seen. It's crowded with all sorts of interesting passengers, including Wilhelmina Newman, a girl her age. Wilhelmina is traveling alone, and she's carrying a secret in one of her trunks--clues to hidden Gold Rush treasure. Marie-Grace and Wilhelmina have to unravel the clues...

Martha Tom knows better than to cross the Bok Chitto River to pick blackberries. The Bok Chitto is the only border between her town in the Choctaw Nation and the slave-owning plantation in Mississippi territory. The slave owners could catch her, too. What was she thinking? But crossing the river brings a surprise friendship with Lil Mo, a boy who is enslaved on the other side. When Lil Mo discovers that his mother is about to be sold and the rest...

Retells in graphic novel format Twain's story about the adventures of a nineteenth-century boy and a runaway slave as they float down the Mississippi River on a raft.