Lu Zhixia clutched the old pocket watch left by her sister, suppressing the timidity of social fear into her bones - in order to find Lu Zhiwei who disappeared mysteriously, she broke into the "Watchmaker Library", but was trapped in a game of life and death rules by the automatically locked door: the list asked her to "take the initiative to greet the gray robe administrator", but the rules on the wall warned "never look at each other", when the pocket watch was hot and turned upside down, her sister's voice said "don't trust the gray robe man" As soon as I landed, the administrator's footsteps were already close at hand. She held her breath against the bookshelf to avoid the level. Just after escaping, her pocket watch dragged her into the trap of the "Old Town Cinema". She also learned that if she cleared the level, she would lose the memory of her relatives. The "goodwill" of her only companion Chen Ye was even pierced by her sister on the screen who said "Don't believe Chen Ye". When the movie ended, Chen Ye lied that "the protagonist is Lu Zhiwei", and Lu Zhixia risked everything to believe her sister's note and shouted "the protagonist is myself". The black tentacles melted when they met the pocket watch. Not only did she get the other half of the list (it said "Pocket watch resists the system, the attic time gear saves the trapped"), but she also saw the truth of the maze clearly: from the moment she stepped into the library, every tick of the pocket watch was a fateful bond between her and her sister, and also a weapon against the system. Even if the next scene involves turning back time and facing a more terrifying past, she will never stop because of her fear of society - let's see how she uses her sister's clues and pocket watch to break through the contradictory rules, transforming from a timid person hiding behind the bookshelf into a guardian who can save her sister.