The four Bankie children are named Ahmad, Ibrahim, Aaliyah and Ja'far. Always on the lookout for an adventure, their unique qualities help guide the way and save them from trouble. Ahmad often stores various items in his pockets: from paperclips to lego pieces, from marbles to elastic bands, from pencils to paper. When the Bankies find themselves in a secret cave on a day trip to the beach, the unusual contents of Ahmad's pockets prove to be very useful. Join the Bankies on their latest adventure. How do they solve the puzzles in the cave? What treasure do they discover?