After being hailed as heroes again for claiming to have caught a Bigfoot-type monster, Tom, Huck, Becky, Jim, and twenty-first-century time traveler Zane find there may be a real monster at large.
"Thirteen-year-old Zane Rasmussen falls unconscious from an allergic reaction and awakens on Jackson's Island in the Mississippi River, where he's discovered by Tom Sawyer, Huckleberry Finn and freed slave Jim.
The excitement continues for Tom, Huck, Becky, Jim, and twenty-first century time traveler Zane as they try to intercept a steamboat carrying stolen slaves to New Orleans.