生性侠义的拉加德尔为了能掌握王子纳韦尔公爵剑法的奥秘，千方百计接近纳韦尔和他比剑，他们在交往中增近了友谊，在纳韦尔处于危难时，拉加德尔挺身而出。纳韦尔深受感动，将骑士称号授予拉加德尔，并将剑法奥秘也传授给他。 纳韦尔公爵的堂弟贡扎格伯爵是纳韦尔财产的唯一继承人。但世事难料，纳韦尔与男爵女儿布朗什相爱，生下女儿奥罗尔，致使贡扎格丧失了继承权，贡扎格狠之入骨，杀害了纳韦尔，纳韦尔临终之前将女儿托付好友拉加德尔骑士…… 十六年后，拉加德尔骑士含辛茹苦的将奥罗尔抚养成人，不仅为奥罗尔夺回了被贡扎格强占的巨额财产，也为纳韦尔报了仇……The Comte de Gonzague schemes against his cousin, the Duc de Nevers, even though he is the Duke's heir and will inherit his estates. The Count has kept secret the existence of the Duke's bastard, recently born. When the Duke learns of his child, he journeys to wed the mother, a baron's daughter, in her father's isolated chateau. The occupants of the castle are surprised and murdered by the Count and his men. The only ones to escape are the Duke's friend, the skilled swordsman Lagardère, and the infant, a girl, now the rightful heiress to the Duke's vast fortune. The Count believes the pair to have drowned, when in fact they have been concealed by a travelling troupe of Italian players. Twenty years pass. The Count has discovered that the two survive and seeks to have them slain. But Lagardère gains the confidence of the Count, and employment as his bookkeeper, through his clever disguise as a hunch-back...
