故事從創造兩個量子人工智能Kuro 和 Shiro開始:柯博士打造出兩名量子Al黑子與白子,是為了讓他們陪伴博士的漸凍人兒子一起成長。在歷經了Q18的五個單元故事之後,黑子白子逐漸學會了人性,並演化出意識與感情。他們也透過連結量子電腦與人腦,幫助漸凍症少年擄獲了愛情與友誼。 但就在這美好的烏托邦來臨時,博士卻認為科技已經失控,決定親手毁滅掉黑子與白子⋯⋯。The film tells the story of a small train riding without its driver and the passengers locked inside. They all had originally their individual goals and destinations but now they one common target - getting out of the train or eventually stopping it. Although the train is moving very slowly, a real drama (partially very absurd) breaks out both inside and outside the train where...。