Follows prodigy vulcanologist Antoinette Vitrini and her sister Emily as they attempt to blow the whistle on an illegal oil drilling scheme before it sets off the eruption of a super-volcano directly beneath Miami.
Twenty years after the disappearance of her daughter, a recovering alcoholic is preparing to host her family's Christmas celebration when her estranged ex-bother-in-law arrives unannounced, bearing nostalgic gifts and a heavy secret.
