I found another description that makes it sound more thriller-like and focused on the external threat to the character:
The series is set in a world where love is deemed illegal and is able to be eradicated with a special procedure. With 95 days to go until her scheduled treatment, Lena Holoway does the unthinkable: she falls in love.
So that sets up a ticking clock scenario that could cover the first season, and after she somehow evades the procedure, they can move on to something else...or maybe she doesn't evade it and S2 is about reversing it?
EDIT: Amazon looking at half hour comedy series based on Zombieland.
It would mark the first original scripted series for the streaming service and the first Amazon original offering from a major studio. The company had been ramping up original production through its own Amazon Studios, the original film and series production arm of Amazon.com, which is behind six recently greenlighted comedy pilots.
I hear original Zombieland writers Rhett Reese and Paul Wernick are onboard for the series as writers/co-executive producers, as is the movie’s producer Gavin Polone, who would executive produce. Sony TV, Reese, Wernick and Polone previously set up a Zombieland comedy series project at Fox last season. The deal with Amazon would fulfill the trio’s original vision for Zombieland as a TV series, which was first developed for CBS in 2005 before the rise of alternative digital distributors of original series like Netflix, Amazon and Hulu. After CBS passed and Syfy couldn’t make a deal for the show, the project was turned into the Ruben Fleischer-directed feature starring Woody Harrelson, Jesse Eisenberg, Emma Stone and Abigail Breslin, which became a sleeper hit.