Once again Indiana Bones and his best friend, Aisha, have to gather their wits, courage and plenty of snacks to sniff out clues and solve a twisty mystery. On the hunt for the Avenger's lost treasure, the intrepid travellers set off on another trek, this time to the ruined Roman city of Ephesus. But nothing is ever simple for our heroes, and the slippery Serpent and stinky Ringo are still hot on their tails, determined to thwart their every move.