This time, Indy's on a rescue mission: his father has gone missing on a quest for the Holy Grail, and Indy must put the clues together to locate him. His exploits put him on his father's trail, but treachery isn't far behind. Soon, Indy finds himself walking right into a trap, and he'll have to team up with his father to make it out alive.
Differences from the film
- Some members of Fedora's Gang are named differently: Roscoe is "The Kid" and Half Breed is "Glasses". While Rough Rider retains his screen name, Fedora refers one of his men as "Alfred".
- After the destruction of the Vasquez de Coronado, Indy questions himself about how he doesn't lose his headwear during the ordeal.
- Tyree is not mentioned.