The young welshman Perceval lives with his mother in a forest. He is completely ignorant of the world of knights because his mother, who has already lost her husband and two sons in combat, protects him. However, one day the young man meets a group of knights. Straight away, the young welshman wishes to become like them, a fearless knight. His dream is to serve King Arthur. To do this, he must confront the warriors and escape the traps he encounters along the way.