Campbell Scott

A single pulse is simultaneously transmitted through every cell phone on the planet. After the pulse, an unspeakable transformation occurs. People everywhere begin devolving into inhuman killing machines--and civilization as we know it grinds to a halt in a terrifying riot of violence. It falls to a small group of survivors to turn the tables and take back the streets--or die trying.

Just a week before their marriage, Christine's fiancé calls off the wedding, leaving her heartbroken. With hopes of helping her through a difficult time, Christine's best friend Jessica enrolls them both on a humanitarian mission in Peru, to work at an orphanage called El Girasol -- The Sunflower. While working at the orphanage Christine meets Paul Cook, a successful and charismatic American doctor who has fled the States after one fatal day took...