In this second installment of JB Pumpernikel books, JB and four friends set off on an adventure for the hidden treasure of Pirate Dark Cocoa. JB lives in the quirky little town of Cocaville, named after the infamous pirate. Pirate Dark Coca amassed a large wealth of chocolate. The Pirate was eventually defeated but his trove of sweets was never found. After finding a treasure map, JB and his friends gear up for a humorous, fun, and somewhat scary treasure hunt. However, not all is what it seems with mysterious findings and mysterious behaviors, JB is left with more questions than answers.

JB and three friends are anxious to commemorate the new clubhouse. After a storm knocks out the electricity, they pass the time with failed attempts of telling scary stories. One after another, their stories fall short of being scary. However, the boys are about to be in the middle of a real scary story themselves. Their night is shrouded with an ominous fog, a nauseating smell, un-explained footprints, and other mysterious happenings. No one could have expected an innocent order of pizza would turn into a night of fun filled terror.