Indy and Marion have separated. He's now returned to the world of smuggling historical artefacts. The reason for their split: their son Henry Jones Jr III, also known as Mutt, has joined the Neo Nazis.
The Neo Nazis have discovered a historical weapon with the power to destroy the planet. Only Indy can save the world.
A drink at a jungle bar is interrupted by Neo Nazi soldiers. Indy only escapes after the intervention of friendly forces. He then travels to the secret Nazi base under the snow where he confronts Mutt.
There is an intimate family moment together before Mutt stabs Indy crying "Don't call me Junior!"
The movie ends with Henry Jones the first, played by Sean Connery, on an isolated island, saying nothing.
