What is a summary of The Lightning Thief chapter 2?

In Chapter 2 of *The Lightning Thief*, Percy Jackson finds himself in a world of chaos and uncertainty. He has just discovered he's a demigod, the son of Poseidon, the Greek god of the sea. He's at Yancy Academy, a boarding school for troubled kids, and is struggling to fit in. He's already gotten into trouble with his bully, Nancy Bobofit, and is starting to realize that there's something strange about the way people react to him.

Percy gets into a fight with Nancy and accidentally makes a puddle of water appear, causing the school nurse to react with surprise and fear. The nurse also mentions that his mom sent him a special pen, which she seems to be terrified of. Percy is confused and scared, feeling like he's losing control of his own life. He's already lost his mom to a mysterious illness, and now he's starting to believe that he's different, powerful, and maybe even dangerous. The chapter ends with Percy wondering what is happening to him and what his life will be like now that he knows the truth about his father.