A daughter decides to test her father with dementia to determine whether the disease has worsened. The test is about getting him to open a glass of strawberry butter. For him, the task is difficult just like a Rubik's cube is a brainteaser. It results in impatience and irritability, and the daughter feels very much the fear of his illness worsening, and she will have to approach it with patience and understanding. The short film is an everyday image and a heartbreaking drama about fear, family and dementia.