When the Nearly Fearless Monkey Pirates land on an island in search of treasure, they find themselves surrounded by monkey pirate ghosts who are determined to protect it--and only Mr. Pickles, the youngest of Captain Banana Beard's crew, can save them from being dropped into a volcano.

When his crew expresses doubts about the existence of the octo-shark, a creature that is half octopus and half shark, Captain Banana Beard of the Nearly Fearless Monkey Pirates and his crew set out on a hunt to find the mythical monster--but the search nearly turns all of them into an octo-shark lunch.