A Li, a girl from an ancient town, discovers that the sound of water at the old stone bridge has disappeared, the stage has lost its echoes, and Grandma is beginning to forget old things. A Shi, the sleeping stone lion, wakes up because of this and tells everyone that the old street is being eroded by the "Shadow of Forgetfulness". With the help of the lantern group, and following the memo book and old bronze bells, A Li and Xiao Chuan re-awaken the memories of the stage and stone bridge. In the end, the old street regains its vitality, and A Li understands that what matters is not grasping all of the past, but having someone willing to remember and continue living, writing new stories down.