After waking Roger up with her piano playing, Roger decides to take Dorothy to see a friend who can help her learn to add feeling to her playing. His friend is a robot named Instro, who was built by a scientist named Amadeus and thought of Instro as a son. Instro remembers how happy Amadeus was when Instro would play the piano for him. While Instro is giving Dorothy a lesson, a mysterious stranger arrives and reminds Instro that he needs to fulfill his creator's legacy.

穏やかな寝覚めをドロシーの極端すぎるピアノの音色に妨げられたロジャーは、ビストロ「アマデウス」で働く、昔なじみのピアニスト・ロボット“インストル”に彼女のピアノの指導を依頼する。繊細なタッチで鍵盤を弾く彼の指…。だが、その指には悲しい思い出が詰まっていた…。