In a near-future world where androids have seamlessly integrated into society, Riku Nakamura is a lonely young man grappling with loss and disconnection. Seeking solace, he orders Lilia, a state-of-the-art android companion, expecting only programmed responses and superficial comfort. However, a mysterious malfunction gives Lilia an unexpected spark of humanity, transforming their relationship into something extraordinary.

As Riku and Lilia grow closer, their bond is tested by Eternal Companions, the corporation that views Lilia as a dangerous anomaly. Branded fugitives, they flee through a world both marvelously advanced and eerily hollow, pursued by forces determined to dismantle the life they’ve built together. Amid the chaos, Riku confronts his own humanity, learning to embrace vulnerability and love, while Lilia discovers a sense of self beyond her programming.