The story begins with the creation of two quantum artificial intelligences, Kuro and Shiro: Dr. Ke created two quantum AIs, Kuro and Shiro, in order for them to grow up with the doctor's ALS son.

After experiencing the five unit stories of Q18, Kuroko and Baizi gradually learned about human nature and evolved consciousness and emotions.They also helped teenagers with ALS capture love and friendship by connecting quantum computers and human brains.But just when this beautiful utopia is coming, the doctor thinks that technology has gone out of control, and decides to destroy Kuroko and Baizi himself...