When Lily wakes in the dead of night with fire shooting from her fingertips, she thinks she must be dreaming. But Lily, along with twins Felix and Serena, is trapped in the dreamscape: a magical realm, in which 'dreamon' monsters from people's nightmares are real and deadly. The friends discover that a mysterious new computer game called Colony is linked to the dreamscape, and it's causing the players, including their younger brothers, to become possessed by dreamons. Can Lily and the twins infiltrate the secretive Colony cult to save their brothers? Or will they be dragged into the very game they seek to destroy, and forced to face monsters more cunning and evil than they could ever imagine?