13-year-old Christian is spending his holidays by the sea with his grandfather Ronson. They both dream of finding the city of Magna Aura, which disappeared into the sea 1000 years ago. Christian's most fiendish classmate, Mark, also turns up on the coast, along with his little brother Nick and the pretty Joana. When the four get caught in a violent storm, a mysterious blue light appears and pulls all four into the past - and into the bustling city of Magna Aura! The city is plagued by a power struggle between Master Drago, who watches over the city with wisdom, and his brother Morton, who strives for absolute power. While he recruits Mark for his evil plans and intends to use Mark's knowledge from the future to win the power struggle, Christian becomes a valued adviser of Drago, who warns the citizens of Magna Aura to beware of Morton... As the youngsters are drawn into dangerous and fantastic adventures, their parents in the present day are trying to find a way to retrieve their children from the past - especially since they know that Christian and his friends were transponded to Magna Aura just before the catastrophe hit...