On his first day on the job as a narcotics officer, a rookie cop works with a rogue detective who isn't what he appears.

A young man receives an emergency phone call on his cell phone from an older woman. She claims to have been kidnapped – and the kidnappers have targeted her husband and child next.

Jerry Shaw and Rachel Holloman are two strangers whose lives are suddenly thrown into turmoil by a mysterious woman they have never met. Threatening their lives and family, the unseen caller uses everyday technology to control their actions and push them into increasing danger. As events escalate, Jerry and Rachel become the country's ...