An E.Q.U.E.S.T.R.I.A Spies story

Who knew the world had pirates rummaging around? While enjoying a day at the beach, The Rainbooms are greeted by a pirate ship full of quirky pirates who are seeking treasure and mystery. Hyped for another adventure, Lightning asks to join them on their quest in hopes to find and discover legendary treasures and islands, as well as learn the meaning of being a pirate. However, the rest of the Rainbooms are convinced that something is terribly wrong with the captain and they would like to find out what.