Who is conversation does Percy overhear what are they discussing?

In "Percy Jackson & The Olympians: The Lightning Thief," Percy overhears a conversation between two teachers, Mr. Brunner and Ms. Dodds, at Yancy Academy. They are discussing strange occurrences and Percy's behavior, hinting at his unique background and the dangers he faces. This conversation sets the stage for the revelations about his identity and the world of Greek mythology he is about to enter.