After a turbulent year, Raynor Winn embarks on the Coast to Coast Walk in winter, unexpectedly alone. Despite 45 years of walking together, setbacks in her husband, Moth's, health have led him to see his decline as inevitable, which Raynor refuses to accept. Feeling trapped, she is drawn north, like a migratory bird, seeking the peace and hope that walking brings her. Navigating harsh weather and tangled emotions, Raynor reflects on the mountains they've climbed. Her journey becomes a meditation on our connection to the land and its power to help us remember, rebuild, and reclaim what is lost.