Anna, editor-in-chief of a news magazine, and her husband Daniel, founder of an AI-centered home security company, are threatened by a mysterious house guest as they expect their first child.

A young couple plans to have a rockabilly themed wedding out at the old farm, despite warnings of a West Nile Virus outbreak. Things go horribly wrong when the virus spawns zombie-creating mosquitoes, who begin to feed on the wedding guests.