In 1950s England, Robin (Andrew Garfield) and Diana (Claire Foy) fall madly in love. Soon after, they marry and expect their first child. But when Robin contracts polio and is paralized while in Kenya with Diana, their relationship is put to the test. He is suffering greatly from his diagnosis, losing his will to live during his stay in the hospital. Diana decides to bring Robin home, which is unheard of for polio patients, and struggles to make arrangements to take care of Robin. In her care he becomes an advocate for the integration of people with disabilities and works to make life easier for people with polio.