Born in the folds of time, Yun Lan is told by a crow who can speak clock language: her shadow stole her future in the last century. So she embarked on a journey to pursue herself, crossing ruins and prosperity, traveling through the lost theater in 1923, the amusement park that went backwards in 1966, and the Dreamland Machinery Factory that has not stopped in 2049. In the gap of time, everything is strange, reality and absurdity dance together: the statues on the street will quarrel, the moon occasionally goes downstairs to buy salt, and every thought of escape will become a living creature chasing her. Yun Lan only wanted to recover her stolen future, but found that she was being ridiculed and tempted by her past self every step of the way. Can she capture her true self in her never-ending pursuit? This book uses an absurd and bizarre perspective to deconstruct the boundary between "chasing" and "self-knowledge", making every page full of the mist of time and the poetry of self-division.