Vergissmeinnicht.

Film tells the story of two old people who seem to meet for the first time in their lives and develop a loving relationship. There is the old gentleman who invites the woman he overheard at the piano to visit the planetarium and tells her about his life on a walk. And then there is the beautiful old woman, who listens to him with rapt attention and assures him that everything he tells her is fascinating for her. But you can sense that something is wrong in the woman's parting words in the evening, and you soon realize why she seems so melancholy: The old man is suffering from senile dementia and has already forgotten his meeting with his girlfriend the next morning. And every day he begins to woo her anew, and she bravely continues to play her role. Until a decisive point.