A trailer for Transcendence has finally arrived to give us an idea of what this artificial intelligence thriller is all about.

Christopher Nolan's long-time cinematographer, Wally Pfister, is launching his directorial debut with a massacre. This first look of the movie starring Johnny Depp explains what happened to get Depp's brain into the machine. It all looks pretty future-positive until things go horrifyingly wrong.

Transcendence, which also stars Morgan Freeman, Paul Bettany and Rebecca Hall, hits theaters April 18.