Jess Aarons is an outsider at school and even in his own family. Jess has trained all summer to become the fastest kid in his middle school class but his goal is unexpectedly thwarted by the new girl in school. She is by nature limitless and through a very interesting and fun process manages to unlock all the potential of Jess'es limitless imagination.
The movie starts showing us the life of Jess, a young boy with three sisters. He is the only son of a farmer and he likes to draw, a lot. The first problem that the movie shows about him are some financial problems that made him wear a pair of old pink shoes in the big race. The movie didn't really took the trouble of solving that problem but instead it just threw some scenes at us regarding them.
In spite of his vast imagination and his talend for drawing he is a very close minded, realistic person. All that changes when a new girl arrives at school. She is a rebel, both the way she looks and the way she acts screams that this girl is not playing by other people's rules. The first thing she did to the school was beat the boys in a "boys-only" running race.
The story after that shows us the progress of unlocking all the hidden potential in the imagination that Jess posseses. The result is a whole new world of fantasy, where everything is possible. Untill an event that changes everything.
For the spoiler funs I will write it: The girl dies tottaly out of the blue while passing the river to get into Terabithia, their world. After so much effort into making her the most loved character in the movie she just dies... WTF !? And after that Jess just replaces her with one of his sisters. What is the point of this, that everyone can be replaced ? that sucks as an ending.
For the non-spoiler fans I will just say that the ending let me down, greatly.
So to sum up I would say that the movie would be a great introduction to a trilogy but I did not see any more movies so I guess this ending really ruins the movie. But the duration of the movie was cool, with nice animations and a lot of imagination so I will give it an above average rating for that.