Mari and Waka plan on making a cake for their friend, but plans fall apart when Mari opens a mysterious book that sends her flying back in time where she ends up crossing paths with William Gilbert.
It's got ricotta cheese in it 
today, huh? It's so fluffy!
Le pusiste requesón hoy, ¿cierto?
¡Es muy esponjoso!
Tem ricota hoje? Está tão fofo!