Unaware of the consequences Marcus and Rosie click YES to play their father's interactive computer game. Chaos prevails as gale force winds swirl viciously around the room sucking the children into the game. They learn the only way home is to fulfil their destiny. Armed with shields and weapons, they begin their perilous journey to the City of Light. Deadly encounters with the dark army along the way prepare them for the battle ahead. Lord Theda, the Lord of the Dark Kingdom, an evil and ruthless warlord, stands in their way. Returning from exile he intends to steal the powerful energy crystals lying beneath the City of Light. Marcus strides out to face Lord Theda. The battle is intense. The fate of this world lies in their hands.