True power sleeps just beneath the surface... When Nova Taylor's older brother disappears, she feels powerless over her own life. She can't sleep, she shuts out her friends, and her motivation is gone. But when a mysterious letter with an undecipherable riddle is delivered to her house, Nova discover that maybe there's something she can do. Alongside her endearingly nerdy best friend Oscar, she decodes the riddle to find its meaning. Before she knows it, she and Oscar have embarked on a road trip to follow the riddle - and maybe even find her brother. But suddenly, they're thrown into a world of monsters and gods from Greek mythology. What the hell is happening? And could Nova have more power over her life - and the world - than she thinks?