The document tells the story of business students who embark on a journey through a galaxy far, far away to learn the proper use of apostrophes from Master Yoda. It provides three rules for using apostrophes: 1) forming possessives of nouns, 2) showing omission of letters in contractions, and 3) forming plurals of lowercase letters. Master Yoda advises the students to not use apostrophes for possessive pronouns or plural nouns, and that practice is key to properly learning the apostrophe rules.