Deng Guihai appears to be an ordinary young and Dangerous boy on the streets of Causeway Bay, Hong Kong City, but his true identity is a national security agent codenamed "Zhulong" who has been lurking in Hong Kong City for five years. He has an introverted personality but an unknown "contrast cuteness" - he looks cold on the outside, but in private he is obsessed with raising cats, collecting stuffed animals, and even practices expression management in front of the mirror when no one is around.
During an operation targeting the kidnapping of a rich man in Hong Kong City, Deng Guihai was forced to expose part of his identity and instantly became the focus of many forces: the local underground leaders in Hong Kong City were determined to silence him, overseas intelligence agencies were also secretly targeting him, and even his closest brothers began to doubt his position. To make matters worse, the "causal decoding" device implanted in his body was activated for the first time - which made every major choice he made possible to trigger a butterfly effect and change the direction of future crises.
When Deng Guihai discovered that he "cannot afford to die" because every time he died would trigger the device's reset ability, he also discovered that the cost of reset was not only physical torture, but also an irreversible rift between him and his timeline. Among countless possibilities, he must protect himself before his identity is completely exposed, find the "chess player" hiding in the dark who has already seen everything, and reveal the truth behind this decades-long layout that spans the Hong Kong city and the mainland.
