When Dr. Henry Jones, Sr. suddenly goes missing while pursuing the Holy Grail, eminent archaeologist Dr. Henry "Indiana" Jones, Jr. must follow in his father's footsteps to stop the Nazis from getting their hands on the Holy Grail first.
Lancelot falls in love with Guinevere, who is due to be married to King Arthur. Meanwhile, a violent warlord tries to seize power from Arthur and his Knights of the Round Table.