Parts per Billion is a 2014 American sci-fi film on Blu-ray, directed by Brian Horiuchi.
The interwoven stories of three couples which are forced to make life altering decisions in the face of a disastrous war. Inspired and sometimes blinded by their love, Len, Mia, Andy, Esther, Anna and Erik are as flawed and beautiful as any of the billions who are facing this human-made biological disaster.