The Stand - Season 1 (1994), Episode 00: The Making of Stephen King's The Stand
Trailer
At a government laboratory in California, a weaponized version of influenza is accidentally released, immediately wiping out most of the population of the world. The remaining survivors now split into two groups, one led by a benevolent elder and the other by a maleficent being, to face each other in a final battle between good and evil.