"One True Thing" is a drama film released in 1998, directed by Carl Franklin and based on the novel by Anna Quindlen. The story follows Erin Brockovich, a young woman who returns to her hometown to care for her terminally ill mother, Kate. As Erin navigates the challenges of her mother's illness, she uncovers family secrets and confronts her own beliefs about life and love. The film stars Meryl Streep as Kate and Renée Zellweger as Erin, showcasing their powerful performances. It explores themes of family dynamics, sacrifice, and the complexities of relationships, ultimately highlighting the importance of understanding and compassion in difficult times.