A lonely widow, Emily (Keaton) discovers cantankerous, unkempt Donald (Gleeson) occupying a ramshackle hut on the edge of Hampstead Heath. Despite having lived there peacefully for 17 years, he becomes the target of property developers who utilise heavy-handed tactics to try to remove him.

Inspired by a true story, this moving comedy shows the importance of home, no matter what it looks like, and what can happen when people work together to fight for what they believe in.