When Tony (Mark Steel) a working-class, left wing South Londoner, falls in love and moves in with Imogen (Claire Skinner), an upper middle-class property developer, their respective millennial sons Ashley (Elliot Steel), a disenfranchised Croydon 'rude boy', and Gideon (Ivo Graham), Eton and Oxbridge-educated and crypto-currency literate, are forced to live under the same roof and behave like the brothers neither of them ever wanted.