Jean Dwight (Brenda Blethyn
) is on the down slope of a career as a bawdy and risqué comedienne. Her sons, Tim (Khan Chittenden
) and his intellectually disabled brother Mark (Richard Wilson
), inhabit a household where chaos is the norm, the music is always on, and Jean’s larger-than-life personality takes center stage.
Their father (Frankie J. Holden), a one-hit wonder 25 years earlier, works as a security guard and hopes for another break. And so, when Tim meets and falls for gorgeous Jill (Emma Booth), his mum fears that this interloper will "break up" the family, and what was never exactly a stable home environment becomes a combat zone where the two women lock horns for his affections.