If there's one person Saffie Sparkes can turn to when the bullies in her school ruin her day, it's her geeky uncle and best friend Dax. The problem is, he's just collapsed in her bedroom and fallen into a coma. With doctors baffled, Saffie learns that Dax had been playing an augmented reality video game called Overworld, and if she wants answers, she will have to join the game herself.Suddenly, the London Saffie has known all her life is filled with monsters, magic, and mayhem, and there's a cute raccoon-like companion named Acorn by her side.In her desperate quest for the truth, Saffie finds herself hurling fireballs at a rock monster in Kensington Gardens, becoming a member of the Mage's Guild, and being chased through the book stacks of the London Library by a rival player with purple eyes and a personal grudge.But what Saffie ultimately discovers is beyond anything she could have imagined. Dax had come into possession of something that shouldn't exist; something that could be devastating if it ever fell into the wrong hands, and if Saffie fails to wake him up before it's too late, it won't just be her uncle's life on the line, it will be the life of every player across the globe.Overworld is an action-packed augmented reality adventure for middle grade readers aged 9-12, younger teens, and anyone looking for a great read that will make you laugh out loud, make you root for the main character from page one, and have you on the edge of your seat throughout.