About a race of alien robots that have conquered Earth and forced humanity underground. After 400 years, a small group of humans develop a plan to defeat the mechanical invaders in the ultimate battle between man and machine.

After a meteor shower in California, Melissa feels that her co-workers and her boss Samantha that work in the agency owned by Vickland are acting differently after receiving a weird plant. She shares her fears with her colleague Billie and with Detective Alexander that are the only persons that she can trust