Franklin the Turtle is on holiday and gets a suprise visit from Aunt Lucy, an explorer whose specialty is finding archaeological treasures. When Granny suddenly falls ill, Aunt Lucy helps Franklin and his friends find the box that may contain the cure. The search for the box leads the friends through thrilling exploits but Aunt Lucy´s goddaughter Samantha, a sassy young Turtle, complicated things with her bossy behavior. So it;s up to Franklin - who uses all his diplomatic skills - to keep things peaceful and focused on finding the box - and what´s inside...