Still a rascal and a wanderer, Huck Finn, now nearing thirty, narrowly escapes a shotgun wedding, outwits a crafty Treasury Agent bent on connecting him with the killing of President Lincoln, meets up with Tom Sawyer and his old river pal Jim, executes a clever con in saloons across Nebraska, and explores the American Frontier with a traveling band of Shakespearean actors. Along the way our free-spirited hero falls head-over-heels for an English heiress, gets involved in a series of brawls, survives a gun battle, has a run-in with a poisonous snake, builds a raft, almost drowns, survives a San Francisco earthquake, and is forced to disguise himself as a woman. All this in an effort to catch a boat to Australia to prospect for opals "as big as your thumb."