The episodes of the series generally revolved around the "cases" of Monica (played by Roma Downey), a young angel recently promoted from the "search and rescue" division, who works under the guidance of Tess (played by Della Reese), a sarcastic boss who showed greater respect as an authority figure of her employee, and is more of a surrogate mother, than a mentor. Monica in one episode outlines that she started in the choir then annunciations, followed by search and rescue and then case work. Most cases involve a single person or a group of people who are at a crossroad in their lives and facing a large problem or tough decision. Monica and Tess bring them messages of hope from God and help give them guidance towards making their decision. During their first episode, the pair receive a red 1972 Cadillac Eldorado convertible as a gift; they use it for transportation throughout the rest of the series while in the human world, with Tess doing the driving. As the series progresses, Monica continues gaining experience as a case worker and, during some cases having to learn lessons of her own.