Lucky finds himself the target of a killer who has a wager with someone that they can kill Lucky.

A mob front man, Rosey, passes on an offer to Lucky to purchase the Fortuna. Lucky refuses to sell, and a series of incidents soon plague the boat: a staged brawl, a ferocious attack dog, and a fake smallpox outbreak.

After a friend is killed running for councilman, Lucky takes his place to ferret out the criminals responsible.