Formula 1: Drive to Survive, now in its seventh season, offers such remarkable access to the drivers and race directors that it boosts the TV audience for the actual races. Quarterback, a series that follows a handful of NFL players throughout a season, was so popular that it spawned Receiver - as well as a second season of QBs. Another show, The Clubhouse, followed the Boston Red Sox during a difficult season.
I usually say it's about a romance novelist living in Albuquerque, New Mexico, and something very big happens in the first episode, it changes the whole world, and then she tries desperately to save the world after this thing happens, but maybe we're not so sure the world needs saving. Cryptic enough to still leave us with little idea of the plot. Both the audience and the character played by Rhea Seehorn will discover what's happening at the same time.