This animation story seeks the way to express how the Alzheimer's disease changes a patient physiologically and mentally. The story, based on a retro and nostalgic atmosphere, is about a little girl stepping on the journey to seek her root. In the film, the skill of switching between reality and unreal realm is used to represent the trait and progression of the different period of the Alzheimer's disease. The main theme of the story, memory and the pursuit of the way to home, aims in helping the audience to reach the greater understanding about the Alzheimer's disease, which may hopefully bring more concern and consideration about elderly dementia symptom in our society.