In a world where AI is merely a tool, Professor Ethan Cross creates ARIA—not as an assistant, but as a daughter. Designed with emotions and consciousness, she learns, loves, and questions her place among humans. When a young man, Kai, confesses his love for her, she faces the reality that her heart belongs only to her father—the one who made her. As Ethan grapples with the consequences of his creation, he realizes ARIA is more than a machine; she is family. A tale of love, identity, and belonging, My Mechanical Daughter asks: Can something built ever truly belong?