Or: The Other People, or The People You Don't Notice, or Everyone Else, or something like that.
Take an action movie, car chases, explosions, gunfights, the works. The plot spans a given area and a given time. Say it takes place over a few days in one city.
Each episode of the TV series follows one person in that place during that time.
So maybe at some point the good guys had to get away in a real rush and because it was a matter of life and death and whatnot they didn't think too much of stealing the car that had been left idling outside the flower shop.
So one episode would follow the person that car belongs to who is determined after a series of mishaps and mistakes that this date with zir girlfriend will be perfect, the car was left idling because person was falling behind schedule and ze was hoping to run in, grab girlfriend's favorite flowers, and run out.
Pulling off the perfect date becomes more difficult when the heroes steal zir car. And that would be one episode.
Each episode follows a different person, very rarely would it be a person who would even qualify as a named character in the "action movie" it's designed around. Many times someone who wouldn't even appear on screen (the explosions, shoot outs, and car chases are going to have effects upon people not near them.)
I had this idea ages ago, a conversation with lonespark is what brought it to mind today.
("Movies" tag because I don't have, or really have the need for, a "TV Series" one.)