Life is like a dream. Everyone seems to be the protagonist of their own life, but they are always affected by the "supporting roles" in their own lives. Parting and reunion, familiarity and strangeness. When looking back along the way, those people who have lived in their lives have long been blurred. Those memories that were originally thought to be unforgettable have finally become comforts that can only be recalled occasionally in the middle of the night.