Diary of a Mad Black Woman tells the emotional story of Helen McCarter, a devoted wife whose life is turned upside down when her wealthy attorney husband, Charles, abruptly ends their 18-year marriage and throws her out of their home for another woman.

Helen, once living a life of luxury, is forced to confront betrayal, heartbreak, and the pain of starting over. With the help of her outspoken grandmother Madea and supportive family, Helen embarks on a journey of healing, self-discovery, and spiritual growth.

As Helen begins to rebuild her life, she meets Orlando, a kind man who represents everything her former husband was not. But before she can embrace a future of love and happiness, Helen must confront her anger, rediscover her worth, and decide whether to seek revenge or forgiveness.