Patricia Green is a middle-class, middle-aged romance novelist with writer's block. William Crowney, aka "Cougar", is a teenage runaway who has been surviving life on London's streets as a rent boy. Their lives couldn't be more different. But when, under extraordinary circumstances, William is invited into Patricia's suburban home, they realise they have more in common than loneliness and desperation: both have a desire for love. Through a twisted hell of home truths, William and Patricia slowly begin to understand, even respect, each other. An unlikely friendship forms - one that gives both the strength to carry on.