You have to steal an adventure. Without your players knowing.
You can base it on a book, a movie, a television show, a comic, or even a play. You can change names and otherwise modify it, but it needs to be perfectly recognizable if someone was familiar with what you are stealing from (at least to the degree that A Fistful of Dollars is recognizable as Yojimbo), and yet you have to run your players through the entire adventure with none of them realizing you stole the whole thing. And, to top it all off, they have to enjoy themselves.
What do you steal an adventure from?
Christian Cox
Interracial Anal Vacation 3.
Jason Robinson
...
Camden Barnes
Hot Wheels Acceleracers, adapted into Planechase.
Caleb Jenkins
Fatal is the system, I assume?
Chase Myers
To not be caught? Grab the fate engine and run people through Proposition Player or some shit in the obscura end of /co/, or if i'm sticking to books, throw some space pirates together and play through Consider Phlebas.
Nathan Turner
Ducktales.
Bentley Murphy
Brutal DOOM
Brandon Carter
Starship Troopers or Evil Dead 3: Army of Darkness.
Michael Turner
Trouble is, it's a group with a wide number of interests outside of RPGs. Can't fool all the of people all of the time, I guess.