What are the 3 most important events in chapter 12 of the lighting thief

Grover wants to find the God of Pan and was telling Percy about him, Percy tells Grover that he doesn't care about the lighting bolt or his father, he just wants his mom back, and Annabeth finds a dog that tells her about a train heading West the next day.

3 most important things:

- The heroes escape Medusa

- Grover reveals that he wants to find Pan

- Percy has a dream about a monster that asked him to bring the bolt to him, in exchange, the monster would give Percy what he desired.

Explanation: Chapter Twelve shows the heroes as they escape from Medusa. After that they searched for a place to spend the night and at the same time they were trying to come up with a plan to reach Los Angeles. At that moment, Grover reveals that he was eager to join the quest so that he could search for Pan. Percy tells Grover that he didn't care about Pan (The God of the Wild places) but that he accepted the quest since he wanted to rescue his mother from the underworld. After that, they fall asleep and Percy dreams about a monster that was dragging him into a chasm, this monster asked Percy to bring the bolt to him, if he did that then the speaker would give Percy what he desires.