Everyone has Halloween, but in Yorkshire, they have Mischief Night, where madness and mayhem rule. In the course of one night, the barriers that separate two families—one white, one Asian—come tumbling down in a blaze of crime, clubbing, love and fireworks—changing all their lives forever.

Debbie, a working class single mother from Leeds, moves her family to Bradford, where they find themselves in an ethnic minority. Daughter Leah must adapt to being the only white girl at school.