When Fan's mum, Agnes, announces the family is moving to Western Australia to take care of Agnes's father - a man they've never spoken of before now - Fan finds herself a stranger in a new town living in a home whose currents and tensions she cannot read or understand. Resentful of her mother's decision to move, Fan forms an alliance with her grandfather, Edwin Salt, a convict transported to Australia in 1861. As she listens to memories of his former life in England, Fan starts snooping around the house, riffling through Edwin's belongings in an attempt to fill the gaps in his stories. But the secrets Fan uncovers will test the family's fragile bonds forever, and force Edwin into a final reckoning with the brutality of his past.