As the world frets over a rash of clown sightings, Elle Bourdain laughs. After being hired by a movie studio to promote the upcoming horror film, CLOWN, Elle starts an advanced advertising campaign.

Her agency hires actors in dozens of metropolitan areas to dress like clowns and frighten people. The campaign goes viral as schools shutdown, children refuse to play outside, and adult paranoia skyrockets. Elle basks in the glory of her professional victory... until she encounters a horrifying clown of her own.

And then the laughter stops.