Donovan shoots Indy's dad in order to force Indy to co-operate. Indy gets past the traps, and finds a knight guarding a room full of Holy Grails. Donovan asks which is the correct one, but the knight simply says that Donovan must choose himself. Donovan asks Else to choose it, and she deliberately gives him the wrong one, so that when he drinks from it he ages to death and disintegrates. Indy chooses the plainest cup there, which turns out to be the true Grail. He then uses the Grail to heal his father. Elsa then carries the Grail over a seal on the floor (which the knight had told them not to do), and the place starts breaking up. Elsa falls down a bottomless pit trying to reach the Grail, and Indy nearly does the same, only stopping when his father asks him not to. They then get out before the place explodes. It's then revealed that Indy took his nickname from the dog he owned as a kid.