After much searching, the happily married young couple, Amber and Stevie think they have found the perfect spot in Grimaldi Square. Despite the rundown pub across the way, the overgrown garden and a decidedly nosy neighbour, number 4 is the house of their dreams. Stevie, a woman who has never left anything to chance, has planned everything so nothing can spoil their happiness. But upstairs in their new home, seated on an old red sofa is the woman they bought the place from - eighty-year-old foul-mouthed, straight-talking, wise-cracking Dorothy - who has decided that she's not going anywhere. It turns out that Dorothy will be only the first in a line of life-changing surprises.