張毅導演耗費8年心血完成，打造出一部完全沒有對白的動畫片。透過四段故事，刻劃出狗與人之間緊密羈絆，每個故事都展現對於狗狗的愛以及生命的省思。本片是張毅對愛犬的告白，也實現了當年跟楊德昌一同構築的動畫夢。

The film consists of four stories about four different dogs and their owners' lives, reflecting love, life and departure. Who will these four dogs meet? What kind of situation do they have? Produced, directed and written by legendary director of the New Taiwan Cinema Chang Yi, who celebrates his return to cinema as a result of his commitment to the late Edward Yang.