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.
Or maybe they're so advanced, 
they don't take baths.
O quizás esté tan desarrollado 
que no necesite entrar a la tina.
O quizás estarán tan avanzados  
que no hará falta meterse en la bañera.
Ou talvez elas sejam tão avançadas que nem tomem banho.