While Nobita and his friends are at Suneo's house admiring Pablo Picasso's paintings Suneo's father bought, Nobita observed the most expensive one and finds it similar to one he drawn in the past, to which Suneo rebuked. After finding the drawing, Doraemon assumed he copied the work of Picasso's, but Nobita insisted that it is coincidental that both are similar. Doraemon decided to check for the sendimental value using the "Famous Painting Checker"