Mr. Lucky and Andamo are comfortably running a Gambling Casino in a South American Banana Republic thanks to a bribeable President.Unknown to Lucky,Andamo decides to aid an anti government revolutionary group.Feeling the heat,Lucky and Andamo will attempt to leave-if possible!
Honest gamblers Joe Adams (alias Mr. Lucky) and Andamo arrive in the Port of Los Angeles on a freighter as crewmen-broke but cheerful.They meet up with a notorious conman,help save his life and end up owning the yacht Fortuna II.This they convert into a gambling ship and which leads to many adventures.
New "regulars" at the Fortuna II's roulette wheel include a beautiful, wealthy divorcée and a studious, eccentric professor. This could somehow coincide with a recent rash of counterfeit money entering the Port of Los Angeles.
Mr. Lucky plays Good Samaritan and rescues a girl about to commit suicide-he thinks.She's really a wealthy,wild runaway who wants the "three dollar tour of Hipville".A couple of the Hipsters have other plans once they know who she really is.
An armed robbery of the Fortuna II curiously includes the taking of personal checks which were used to pay off gambling losses. This oddity leads Mr. Lucky and Andamo to the true reason for the crime - and very nearly to Davy Jones' Locker.