Watch The Adventures of Huck Finn for Free: How to Stream the Movie Online at 123Movies. . Mischievous Huck Finn is unnerved when his father, reemerging after years away, kidnaps him in an attempt to take away a $600 inheritance from his late mother. Fearing for his life, Huck fakes his own death and escapes. He soon runs into his friend, Jim, a slave fleeing his master. Together, the pair embarks on a raft journey down the Mississippi River, staying ahead of pursuers who blame the slave for Huck's alleged murder.