A lesbian artist creates a love triangle when she moves in with a closeted teenage girl and the man in her pre-arranged heterosexual marriage.

Through the story of a single family, Brassneck traces a history that parallels the Labour Party's advent to power in 1945 through to the property speculation of the 1960s and the disillusionment with the Labour government in the early 1970s. Like most of the early work of the writers, David Hare and Howard Brenton, committed radical (if not revolutionary) socialists throughout the 1970s, it is a satirical attack on capitalist greed and corruption, full of savage, and often disturbing, humour.

Newlyweds Samantha and Robert Miller emerge from the church to the sound of cheers. However, the happy scene is disturbed by a cruel practical joke, someone throws a paint-bomb at the bride. Later, upon returning from their honeymoon the couple discover the smashed remnants of their wedding cake and a mysterious gift -- one soiled glove. Could it be a warning? Does someone hold a grudge against the couple?