Before follows a group of not-yet-humans in an eerie and exhausting waiting room. Like an eternal DMV visit, every visitor in this room has waited for thousands of years for their number to be called to be assigned a life on Earth. Some are anxious, some are hopeful, and others are defeated by impatience before their earthly lives have even begun.

When an Iraq War veteran receives a calling from a higher power, he embarks on a mission to stop a fallen angel from raising an army of the dead to take over the world.