Izzy has an incredible secret -- she can enter the world of her new video game! She meets Rae, a robot who says Izzy is destined to save Dungeon City from the Big Boss. How is this possible?! And how can she fight for this virtual world when she's got a whole real life to keep up with: her family (though she could do without her mom's annoying cat), and her best friend, Eric. Things get even weirder when Izzy loses a life while inside the game, and she starts to worry about what might happen if she gets a Game Over for good. Meanwhile, Eric has been super upset with Izzy since she's been keeping secrets and bailing on their plans. Can Izzy survive Dungeon City and save their friendship?..