A Piece of Your Mind is a South Korean drama series that follows the story of Ha Won, a successful AI programmer who is still grieving the loss of his girlfriend in a tragic accident. Despite his success, Ha Won is unable to move on from his past and finds solace in listening to the voice messages left by his late girlfriend.
One day, Ha Won meets Seo Woo, a classical music recording engineer who is struggling to make ends meet. Seo Woo is drawn to Ha Won's quiet and introspective nature, and the two form an unlikely bond. As they spend more time together, Seo Woo begins to uncover the secrets of Ha Won's past and helps him confront his grief.
Meanwhile, Ha Won's AI assistant, AI, starts to develop emotions and a consciousness of its own, adding a new layer of complexity to Ha Won's already complicated life. As Ha Won and Seo Woo navigate their feelings for each other and the challenges of their pasts, they must learn to let go of the past and embrace the present in order to find happiness.