S3, E3: Alan Titchmarsh and his team come to the aid of Carol Nwosu, who has to care for her son Danny - who has sickle cell anaemia - while coping with her own crippling arthritis. In spite of this, Carol dedicates her time to running a charity that supports families whose children have sickle cell disease. Understandably, the garden at their Morden home has been neglected. Alan surprises Carol on her doorstep and packs the family off for a few days while his team of contractors get to work. Alan's plan is to make the garden seem larger by laying it out on the diagonal and to use level changes and straight lines to emphasise more space. Landscaping expert David Domoney lays a new patio across the garden, leading down to a sunken seating area. Alan wants to replace the old garage with a sanctuary for the kids, but first permission must be obtained from the headmistress of the adjacent school. As the family return, the garden has been transformed - but will it meet all of their requirements?