Desperately trying to atone for a mistake in a game of football, 15-year old Dolf uses an experimental time machine and is catapulted back to 13th century Europe. Here he finds himself trapped in the middle of the Children’s Crusade - an 8,000 strong army of children herded together by zealous noblemen to launch a march on Jerusalem. As they near their goal, Dolf’s modern knowledge proves useful as he saves himself and his new found friends from the many dangers of their march. His heroism attracts the attention of the beautiful Jenne and Dolf finds himself falling in love. Soon however he begins to suspect the march’s leaders of harbouring dark intentions and it becomes a race against time for him to save his companions from a terrible fate.