In Washington DC architectural circles, engaged Isabelle Flanders and Bobby Harcourt are the rising power couple as both are talented and successful. However, everything changes when Isabelle's assistant Rosemary testified in court that her boss ran a stop sign that killed a family who had the right of way. Stunned by the betrayal as Rosemary was the driver, Isabelle takes a second wicked blow when her employee steals her designs claiming them as hers. Strike three occurs when she loses her architectural license and strike four happens when Bobby dumps her and marries Rosemary.
The Sisterhood knows a series of injustices have occurred with Isabelle as the victim and Rosemary the culprit. They begin a campaign to right the wrong starting with getting Isabelle's license reinstated and obtaining clients for her. The second phase begins: to destroy Rosemary. They secretly let the media know the identities of Rosemary's lovers and begin sending her mail telling her they know the truth about the vehicular homicide. Bobby knows he made a big mistake when he dumped Isabelle for Rosemary.
The plot is implausible, but fans of the Sisterhood series will not care once they as judge and the JURY decides that the VENDETTA is just and PAYBACK is now. Rosemary is a nasty villainess who has gotten away with every dirty trick until now. The Sisterhood is moving on as they still struggle with loss and new personal relationships. For fans of the series only as Isabelle savors SWEET REVENGE.