Sylvia Knight is losing hope that the person who killed her husband will ever face justice. Since the night of the hit-and-run, her world has been shrouded in hazy darkness --- until she meets Theo St. John, the discoverer of a rare comet soon to be visible to the naked eye. As the comet begins to brighten, Sylvia is soon drawn into the orbit of local mystic Joseph Evans, who believes the comet’s arrival is nothing short of a divine message. She struggles to define for herself where the reality lies. As the comet grows in the sky, her town slowly descends further and further into a fervor over its impending apex, and Sylvia’s quest to uncover her husband’s killer will push her and those around her to the furthest reaches of their very lives.