It is a C1-C2 level book that combines grammar and vocabulary. 

It consists of 15 Modules that contain grammar theory in Greek with accompanying simulation exercises for C1-C2 level exams, as well as vocabulary (derivatives, prepositional phrases, phrasal verbs, words easily confused) with a wide variety of exercises. Additionally, every 3 Modules there is a Revision Lesson with review grammar and vocabulary exercises. 

At the end of the book, there is a compiled Vocabulary and a list of Irregular Verbs.