"We've got to figure out what Morpheus was doing in the park," I said. "I don't

like this 'main event' thing he mentioned."

 

"He's working for Kronos," Nico said. "We know that already. A lot of the minor

gods are. This just proves there's going to be an invasion. Percy, we have to

get on with our plan."

 

"Wait," Grover said. "What plan?"

 

We told him, and Grover started tugging at his leg fur.

 

"You're not serious," he said. "Not the Underworld again."

 

"I'm not asking you to come, man," I promised. "I know you just woke up. But we

need some music to open the door. Can you do it?"

 

Grover took out his reed pipes. "I guess I could try. I know a few Nirvana tunes

that can split rocks.

 

But, Percy, are you sure you want to do this?"

 

"Please, man," I said. "It would mean a lot. For old times' sake?"

 

He whimpered. "As I recall, in the old times we almost died a lot. But okay,

here goes nothing."