The brilliant inventor Gennai is working on a time machine to take her to the future.  The current world has inspired her to see what the future has in store.  But her plans become derailed when her assistant is in accident.
I wonder whose idea it was
Un día de la semana en el que se come 
anguila... ¿quién lo habrá inventado?
Un día de la semana en el que se come anguila... 
¿Quién lo habrá inventado?
De quem será que foi essa ideia