In the future, due to the problem of ecological sustainable development, paper has become a distant luxury under legal control. ── printing is regarded as a crime, while the library has become an inaccessible taboo museum. "Big Z" controls the network resources of the whole world, and all information is strictly controlled. The seven murders and their clues lead the British scholar Arthur of Italian descent to Durin to unravel the ancient mysteries and discover the intentions behind the killer's murder. With many unexpected traps during the journey and the turning point in Arthur's state of mind, only if you know your true self, God will come naturally.