Alan Titchmarsh heads to Preston in Lancashire to surprise a young family facing an uncertain future. With the support of fiance Michael Brown, mum to Ivy, Roisin Pelan is facing stage 3C cancer. Despite enduring challenging treatment, Roisin has raised thousands for cancer charities and is determined to see her young daughter grow up. Alan and his team of experts turn Roisin's dangerous sloping garden into a stunning music festival-inspired haven.