Margaret and Jeff live in humdrum suburbia. Married for 25 years, they were an unremarkable middle aged couple working toward retirement. But Jeff and Margaret shared a secret. It had been Jeff's idea to spice up a flagging sex life by converting their fourth bedroom into an adult play room. Sleeping in the spare room had once been a lonely and sad affair, the consequence of a headache or a badly timed squabble over some minor domestic issue. But if Jeff found Margaret in the spare room now, it was the green light for increasingly erotic playtimes. But neither Jeff nor Margaret had shared all of their secrets, Jeff is harbouring an increasingly overwhelming secret desire and Margaret hides a colourful past experience. Will Jeff's fantasy escape into a new reality in the Fourth Room, will Margaret's naughty secret be exposed?