In the exciting fourth season, we fast-forward six years, disvering that Nikki (Esther Smith) and Jason (Rafe Spall) are experienced adopters having built a lovely little nuclear family, enriched by an extraordinary support work. However, as their teenage daughter, Princess (Scarlett Rayner), sts to yearn for a nnection with her birth mother, Nikki and Jason find themselves nfronted with the ultimate test of their parenting skills.