Four years after her husband Richard’s death, Cate Morris is let go from her teaching job and unable to pay rent on the London flat she shares with her son, Leo. With nowhere else to turn, they pack up and venture to Hatters Museum of the Wide Wide World, Richard’s ancestral Victorian museum in the small town of Crouch-on-Sea. Despite growing pains and a grouchy caretaker, Cate begins to fall in love with the quirky taxidermy exhibits and sprawling grounds, and she makes it her mission to revive them. But threats from both inside and outside the museum derail her plans and send her spiraling into self-doubt. As Cate becomes more invested in Hatters, she must finally confront the reality of Richard’s death --- and the role she played in it --- in order to reimagine her future.