[This is the first book in the] trilogy called "The Master of the Absent-Minded Sciences". The heroes of the other books (and the author) establish a club, where they analyze the notes (and, later,letters) of the titular, extremely absent-minded and ignorant mathematician, whose companion (an eight year old girl named Little One - one as in the number) has to solve every problem in which he manages to get himself.

[This book] is about the author first meeting the Master before he goes on his journey, and later asked to review his thesis. The author decided to gather his friends from the other books to analyze the mistakes. They establish a Club.

- I am a mathematician, and I go into a new journey, to gather material for my thesis. And once I return and get a Master degree...

- What degree? - I asked - Master's? But it's not granted in our country for a long time already.

- Even better - the stranger said in a care-free manner, - then I'll be the only Master of these... what are they called.. yes, absent minded sciences! I mean no. Sorry, sometimes I'm a terrible mathematician... No, I mean, sometimes I am terribly absent-minded. But very rarely.