Diana Guerrero, a young therapist who infiltrates a powerful family as a nanny to discover the truth behind her mother's death, becomes the caregiver for Clemente Walker's daughter, a girl with Autism Spectrum Disorder. The relationship between Diana and the girl quickly grows, arousing the jealousy of Vanessa Riesco, Clemente's manipulative partner, who will not hesitate to protect her own interests, even at Diana's expense. In this dangerous scenario, the young therapist will have to confront the Walker family's dark secrets, while fighting to protect herself and her loved ones.