Let me guess, Indy gets visited by the aliens from the last movie, they change his appearance, making him younger, and send him to the future!
The next installment: Indiana Jones and the First Sasquatch.
Indy finds evidence of big foot in Shitcago, IL and traces it all the way to the White House.
LOL!!
I am kinda relieved that they didn’t kill him The Crystal Skull. Would you really want the franchise to continue on with Shia LaBeouf as Indie’s successor?
Let him retire and die in bed mourned by children and grandchildren. Let them divvy his stuff and one of them gets a suitcase or a strong box, opens it - and the adventure continues.