Seth Rogen is a down on his luck contractor who accidentally destroys a snuff film director's snuff film collection. Now he's got 30 days with the help of his stoner buddy James Franco Pete Davidson to make a new snuff film or the director will kill them both. The name of the movie? The Right Snuff.
Aliens land on earth and ≤boink!≥ get their spaceship repo'd (long story but their spaceship has a cloaking device that allows it to blend in like an earth vehicle)...
The movie is one long Thelma and Louise hijinx where the protagonists get into every imaginable earth misadventure you can imagine. (Think, the movie Paul, mixed with any number of ben stiller movie plots)..
It all works out in the end, and even though they regain possession of their ship, the aliens choose earth because earthlings are promiscuous and easy..
Hat tip to /u/volcel_olive_oil without whom this treatment would not exist...