This takes place in Percy Jackson and the Lightning Thief when they went to find Hades to get back the Master Bolt. If you forgot this part, or do not know what I'm talking about, I recommend you reread the book.

The trio, Annabeth, Grover, and Percy were heading towards Hades' palace. They were wading through the Asphodel Fields, passing through ghosts. Slowly, the crowd began shrinking as they got nearer to Hades' palace.

Soon, the crowd of ghost were thin enough that they could see the horizon. Looming above the horizon was a black obsidian palace.

"I suppose it's too late to turn back," Grover said nervously.

"We'll make it out alive," Percy said, trying to reassure his friend.

"Can't we visit somewhere else?" Grover suggested. "Like Elysium?"

"Come on Grover, no stalling." Annabeth pulled his arm and led him towards the palace.

Grover yelled and tripped, and suddenly, his sneakers sprouted wings and his legs shot forward. The flying shoes that Luke gave them activated. (A.N. if you don't remember, Luke gave Percy the flying shoes before they went on the quest, and Percy gave it to Grover as he didn't need it.)

"Grover!" Percy called. Him and Annabeth both leapt up and grabbed onto Grover's arms.

"What's happening?" Annabeth asked.

"My shoes! They automatically activated!" Grover yelled back. The shoes suddenly shop forwards again, pulling all three of them with it.

The shoes zipped away from the castle and made it sharp turn left. They were pulled, down a steep hill.

"Grover!" Annabeth screamed. "Take off the shoes!"

"I'm trying!" Grover replied. He tried to sit up to yank it off his foot, but it's not that easy to sit up when you're going feet first down a hill.

The cavern slowly turned black, stalactites appearing around them. Ahead of them, they saw a huge large pit.

"What is that!?" Grover yelled, closing his eyes, and trying to stop the shoes.

"It's Tartarus!" Annabeth said in realization.

"Pull!" Percy grunted and pulled as hard as possible. Annabeth joined to help him, and Grover tried to grind his hooves against the floor. They abruptly stopped, but the momentum flipped Percy over Grover.

"Percy!" Annabeth cried, trying to grab Percy's hand. Grover tanked off both shoes and tossed them aside. He tried to jump and get a hold of his friend, but they were going too fast for Percy to be stopped. He fell of the edge, and into Tartarus.

The last image he saw before he was swallowed by darkness, were his two friends' faces, frantically trying to get down and haul him up. Then all was black.

Yeah I'm doing a new story. If you haven't check out my other story. I haven't forgotten about that one, just taking a break to start this one. Hope you enjoy!