1991(Sorcerer's Stone) → Harry Potter begins his magical education at Hogwarts School of Witchcraft & Wizardry → Professor Snape appears to "hex" Harry during a Qudditch Match → Harry, Ron, and Hermione explore the school and learn about the Sorcerer’s Stone; Voldemort attacks Harry in the Forbidden Forest; Harry faces Professor Quirrell and Voldemort → Harry Potter prevents Voldemort from acquiring the Sorcerer's Stone
1992(Chamber of Secrets) → A mysterious warning appears on the wall; The Chamber of Secrets has been opened.
→ Various students are suddenly found petrified; Hermione Granger is one of them. → The Hogwarts Board of Governors suspends Headmaster Dumbledore while Ginny Weasley is taken into the chamber. → Harry Potter & Ron Weasley find the entrance to the chamber of secrets. A cave-in separates the duo, but Harry is able to defeat both the basilisk in the chamber as well as the spirit of Lord Voldemort. → Ginny Weasley is rescued from the chamber. Dumbledore is re-instated. → Harry Potter returns Tom Riddle's diary to Lucius Malfoy, one of his socks concealed inside. Lucius Malfoy accidently releases his house elf and threatens Harry that he'll meet the same end as his parents.
1993(Prisoner of Azkaban)
→ MASS MURDER SIRUS BLACK HAS ESCAPED FROM AZKABAN!