The 100 (pronounced The Hundred ) is an American post-apocalyptic science fiction drama television series that premiered on March 19, 2014, on The CW. The series, developed by Jason Rothenberg, is loosely based on a 2013 book of the same name, the first in a series by Kass Morgan.
The series follows a group of post apocalypse survivors, representing many age groups: Clarke Griffin (Eliza Taylor), Bellamy Blake (Bob Morley), Octavia Blake (Marie Avgeropoulos), Jasper Jordan (Devon Bostick), Monty Green (Christopher Larkin), Raven Reyes (Lindsey Morgan), Finn Collins (Thomas McDonell), John Murphy (Richard Harmon), and Wells Jaha (Eli Goree) as they are among the first people from a space habitat, "The Ark", to return to Earth after a devastating nuclear apocalypse; the series also focuses on Dr. Abby Griffin (Paige Turco), Clarke's mother; Marcus Kane (Henry Ian Cusick), a council member on the Ark; and Thelonious Jaha (Isaiah Washington), the Chancellor of the Ark and Wells' father.
In March 2016, The 100 was renewed for a fourth season of 13 episodes, which premiered on February 1, 2017. In March 2017, The CW renewed the series for a fifth season.