Anna, can you hear me? I'm your memories, You're my reminiscences. I'm made through you.
A girl sings and dances on a club stage. The club owner fires Anna as no one listens to 'the songs of humans anymore. Anna, in despair without a stage, wanders the streets filled with humanoids. In the year of 2040, Anna visits the Neurological Research Institute and gets connected with the idol humanoid singer Mary. As she embarks on her journey to the past, the hidden secrets of Anna and Mary begin to reveal.