I’m wondering whether to put this in a spoiler tag, as it possibly reveals the plot twists of a number of science fiction movies. On the other hand, these are generic clichés, and if I don’t say which the movies are, you won’t recognize them unless you’ve seen them already…
SPOILER - Click to view
Pirates! Women in corsets! Pirate hide out! (In pre-Columbian ruins on the top of a mountain on an island in the Caribbean) Treasure map! (Which turns out not to be a physical map, but rather a chart with boxes for various science fiction clichés, and arrows connecting them when they can be combined. It also looks a bit like the kind of diagram you draw to explain the plot of a Christopher Nolan movie) William of Ockham as a time-travelling pirate-priest! (William of Ockam 1287-1347 is credited with inventing the philosophical principle known as Occam’s Razor, and here has been brought forward in time to the 18th century-ish pirate setting). Time gate in the Bermuda Triangle! (Convenient for Caribbean pirates…) Sending a whole pirate ship forward in time! Arriving at a future New York, with the city in ruins and the Statue of Liberty half-buried in the sand!
The future New York doesn’t qualify for the “ruins” subtask, because it’s modern, but the pre-Columbian ruins that the pirates are using as a fort qualifies for the subtask, I think.
I make that a task completion of “ruins” and “meet a time-traveller.” Possibly also a completion of the “travel in time” subtask, though I won’t claim the points for that as the special effects for that bit weren’t very clear.