Twenty years ago, a maid in the Jones family mistakenly injected hypnotic instead of a nutritional supplement into Thomas Jones's newborn daughter, causing the child to have weak breathing and possibly face death. Fearing responsibility, the maid sought another baby girl to replace the Jones family's child and abandoned the real daughter deep in the mountains. The Jones family's child, who miraculously survived, was rescued by Fiona Johnson, who had come to bury her own stillborn child. Fiona named the child Ava Johnson and raised her to adulthood. Twenty years later, Ava began working at Jones Group but was bullied by Morgan Jones, the daughter of the maid who had replaced her years ago. Morgan falsely accused Ava of theft, humiliated her, and subjected her to various forms of torment.
