Following the loss of their son, a retired sheriff and his wife leave their Montana ranch to rescue their young grandson from the clutches of a dangerous family living off the grid in the Dakotas.

Free-spirited writer Juliet Ashton forms a life-changing bond with the delightful and eccentric Guernsey Literary and Potato Peel Pie Society, when she decides to write about the book club they formed during the occupation of Guernsey in WWII.