Dolf joins the "Children's Crusade," a group of roughly 8,000 children traveling from Germany to Jerusalem. He meets Jenne, a tough girl his age who helps him navigate this harsh new reality.

: Dolf, a teenage boy from the Netherlands, uses his mother's experimental time machine to travel back to 1212 AD. He saves a young girl named Jenne and decides to help the thousands of children on their dangerous march to Jerusalem, using his modern knowledge and items (like his jeans and sneakers) to survive and lead them. or more information on the plot differences between the book and the movie?

Rohan decided that he wanted to embark on his own crusade, but not in the classical sense. He wanted to make a difference in his own community, to fight for what was right and just. With the mysterious jeans giving him an unusual boost of confidence, he set out to tackle some of the social issues that plagued his city.

: Stars Johnny Flynn as Dolf Vega, Stephanie Leonidas as Jenne, and Emily Watson as Mary Vega.