Description
In this book of the series there is a reversal: Mimi decides that she does not want to be nervous anymore. She makes a personal bet that she will keep her composure for a whole week: she will not interrupt the teacher in class, she will not go to Antarctica even once, she will not find her brother. She will be the perfect student, the perfect daughter, the perfect sister. This of course creates a series of funny situations, since her friends think that Mimi was taken by the aliens and brought a Martian in her place.
