Affleck portrays a man who must protect his daughter by disguising her as his son after a plague wipes out most of the female population.

Almost a decade after a mysterious pandemic wiped out most of the female population, Dad and his daughter Rag journey through British Columbia.

At night, the two sneak out their belongings into a nearby cabin in case of a "red alert", a term the father uses when dangerous men are approaching.

Tom eventually suspects that the "son" is a daughter and he questions Dad with concern, not wanting Rag to be in the possession of a random male with evil intentions.

Later, three men arrive, barge into the house and kill Tom and Lemmy (Calvin apparently tipped off the intruders).

In September 2016, it was announced Casey Affleck would write, direct, and star in the film, while Teddy Schwarzman would produce under his Black Bear Pictures banner.

[11] On October 11, 2019, Paramount Pictures Home Entertainment released Light of My Life on Blu-Ray and DVD.

The website's critical consensus reads, "Its deliberate pace may test the patience, but viewers attuned to Light of My Life's sober wavelength will be rewarded with a thought-provoking chiller.