In 2030, AI is everywhere including the medical field, finance and security. Artificial intelligence has become essential in people's lives. They have come to completely trust AI, but artificial intelligence becomes out of control and it causes disaster.

Sayuri Honda (Miki Nakatani) claims she has no interests in love affairs. She refuses to take things as they are for she fancies her harbor town of Nagasaki as Lisbon, Portugal. But on Christmas, encouraged by the season of romance, she tries to materialize her once-in-a-lifetime love with the man of her dreams.