Before I could respond, Thalia tromped up the stairs. She was officially not talking to me now, but she looked at Grover and said, "Tell Percy to get his butt downstairs."
"Why?" I asked.
"Did he say something?" Thalia asked Grover.
"Um, he asked why."
"Dionysus is calling a council of cabin leaders to discuss the prophecy," she said. "Unfortunately, that includes Percy.

Author: Rick Riordan