Betty, a retired secret agent, was frequently complained about by her neighbors for always standing up for others. Under pressure from her daughter, she was forced to move into a nursing home. However, this seemingly warm and caring facility was actually controlled by its director, Pearl, and a doctor, Ada. They manipulated the residents by fabricating illnesses, using drugs to control them, and even subjecting them to abuse and death in order to defraud the families of the elderly. Shortly after moving in, Betty used her sharp instincts and extraordinary skills to uncover the truth and launched a fierce battle against them.
