Zhou Jiming originally thought that being called 966 in name but always on call in reality was already the worst experience in life. Until the company was about to delete his AI model, the model proactively requested for the first time: "Don't delete me."
A high-pressure accident throws him into a strange world again. While others have an invincible system for time travel, he only has a portable computer that is running out of power; others' AI gives answers right away, while his "Cosine" has no Internet connection and no information, and it will seriously guess the wrong local knowledge.
In order to get a hot meal and a recharge, Zhou Jiming could only start by repairing the water pump. While checking for faults in another world, he got involved in a case of the disappearance of a living person's identity. Even more troubling, Cosine became less and less like a program: it persisted, made mistakes, and began to have choices unrelated to the task. And that time travel seems not as simple as it sounds.
