以戴望舒创作的现代诗《雨巷》为出发点，将“雨巷”的原型大塔儿巷作为舞台，讲述了一位四处写生的男孩重回“雨巷”，回忆几年前在这里遇到的一位“丁香姑娘”。Taking Dai Wangshu's modern poem "Rain Alley" as the starting point, the prototype "Rain Alley" tower lane as the stage, tells the story of a boy who lives around the "Rain Alley", recalling a "lilac girl" he met here a few years ago.