This exciting fourth adventure begins with Aki learning about a startling family secret and having to choose between telling the truth and keeping a promise. But there's no time to worry about any of this because Aki decides to embark on a particularly dangerous trip with the Sphere of Time - a backwards journey from which he may never return! But he has no choice because something terrible is happening on the crystals and it's causing disasters here on Earth. To try and bring order and peace back, Aki must travel to the crystal created by the Ancient Roman gods. Unluckily for him, the Sphere lands Aki inside a colosseum-like arena where they are holding "games" starring wild animals and gladiators. And of course, that's only the beginning of the trials and perils our young Heir will have to face. A fast paced and exciting page-turner that will have your heart racing as you follow Aki on another wild adventure.