The Day I Fell Off My Island tells the story of Erna Mullings, a teenage Jamaican girl uprooted from her island following the sudden death of her beloved grandmother. When Erna is sent to England to be reunited with her siblings, she dreads leaving behind her elderly grandfather, and the only life she has ever known.

A new future unfolds, in a strange country and with a mother she barely knows. The next decade will be a complex journey of estrangement and arrival, new beginnings, and the uncovering of long-buried secrets.