A family calamity leads little Derek Fish to the long lost journal of his distant relative and infamous pirate, Erasmus Fish. Derek reads of swashbuckling adventures, a vast treasure and magic that can only be used by the male line of the Fish family.

Realising that the treasure is his only chance of saving the day, Derek makes a fateful wish and finds himself back in 17th Century Portsmouth amidst the crew of his ancestor’s ship, the Surprise, now in the hands of the evil Captain One Eye. The evil pirate has wickedly tricked Erasmus out of his ship, treasure and worse, his life.

Derek soon finds that Captain One Eye and the rest of his cutthroat ship mates don’t want to give up the treasure they stole easily and a terrifying struggle ensues as Derek is chased up the mast, imprisoned in the hold, made to walk the plank, almost drowned and forced to do battle with a monster Squid.

A magical connection to Erasmus, gives Derek a helping hand but can he, against all odds, overcome these nasty pirates and bring back a fortune in treasure that will solve his family’s problems?