After his mother's death, eleven-year-old Marcus is sent to live on a small South Carolina island with his great aunt, a reclusive painter with a haunted past. Aunt Charlotte, otherwise a woman of few words, points out a ruined cottage, telling Marcus she had visited it regularly after she'd moved there thirty years ago because it matched the ruin of her own life. Eventually she was inspired to take up painting so she could capture its utter desolation. The islanders call it "Grief Cottage," because a boy and his parents disappeared from it during a hurricane fifty years before. Their bodies were never found and the cottage has stood empty ever since. During his lonely hours while Aunt Charlotte is in her studio painting and keeping her demons at bay, Marcus visits the cottage daily, building up his courage by coming ever closer, even after the ghost of the boy who died seems to reveal himself. Full of curiosity and open to the unfamiliar and uncanny given the recent upending of his life, he courts the ghost boy, never certain whether the ghost is friendly or follows some sinister agenda.