4) Emperor Tu Duc’s Secret Tomb
Emperor Tu Duc was the fourth emperor of the Nguyen Dynasty, and his rule lasted from 1847 to 1883. He was famous for having about 104 wives, and his actual tomb is unknown, as the one planted smack dab in the middle of Vietnam is simply an empty lump of granite. Rumor has it the emperor ordered all his servants, after they carried off and hid all of his gold, to kill themselves as to not reveal the location of the treasure.
That’s a pretty dark setup. Drake hunting for a treasure that used to belong to a guy with hundreds of wives and concubines, would make for a much darker, possibly more adult tale. There’s no way Sully and Nate could go after some dead guy’s treasure without making jokes about his long-gone sex life. But it also sounds like a treasure that would be so impossible to find, that it may not be worth it. What if they just took all the gold and it doesn’t exist? Why is Drake trying to hunt down another lost treasure trove? Providing more questions as to why Drake can’t just get a real job has worked well, and would allow for some cool series moments.