In Scholastic's next multi-platform series, history is broken and best friends Dak Smyth and Sera Froste, along with teen Hystorian Riq, must travel back in time using a device known as the Infinity Ring to correct the "Great Breaks" that have occurred where history has gone disastrously off course. Each book comes packaged with a full-color, collectible Hystorian's Guide--the key to unlocking an all-new online adventure.