Based on the controversial memoir by Raynor Winn, this is the story of how she and her ailing husband Moth (played by Gillian Anderson and Jason Isaacs) set out on a 630-mile trek along the Cornish, Devon and Dorset coastline. After being evicted from their home, they make the desperate decision to walk in the hope that, in nature, they will find solace and a sense of acceptance. With depleted resources, only a tent and some essentials between them, every step along the path is a testament to their growing strength and determination.