After a meteor shower strikes Los Angeles, toxic smoke is released across the city causing people to physically change and become violent. A small group of survivors plans to vacate the city by heading to the coast.

After a night out of partying and left behind by her friends, Ava wakes up and sneaks back home only to find that she’s already safe in bed. But that’s not Ava – it’s someone who looks just like her. A time-traveling fugitive has stolen Ava’s body, her identity, and her life. What’s more — she’s not alone. There are others, hiding in the past, secretly living among us, plotting to alter the future. Without her body, Ava is a virtual ghost, silent and invisible to the world. And, so far as she knows, she’s the only one who can stop them and put the timeline back on course.