Percy had finally returned the Master Bolt to Zeus. "Kronos stole it," he said. He explained how he was somehow returning, but Zeus brushed him off and told him he knew. He dismissed him.

But Percy kept on, and Zeus ended up using the Master Bolt to kill him.

"Wait!" Percy ducked down, waiting for the moment to come. But it didn't. He looked up and saw... you.

You were holding Zeus's wrist and keeping him from hurting Percy.