The spider propelled itself toward the demigods, forcing them to split while jumping sideways to dodge him. Percy was the only one that didn't move, being intangible the spider went right through him. Nico and Jason were now looking at the giant, gray monster as it seemed to be distracted, constantly turning as if it was looking for something. Nico realised that it was able to sense Percy's soul. This gave the Ghost King an idea.

"Perce move around to distract it." - whispered the son of Hades.

While the Sea Prince was doing that, Nico gathered his energy and concentrated himself on raising the sceletons. In a few moments the chamber was full of undead warriors, there were at least 15. They charged towars the spider and managed to rip two of its legs from his body, but a spider wouldn't be a spider if it didn't have six other legs, would it. So the monster was now furious, you could literally see fire in those intimidating red eyes and his fangs seemed to be excreting venom twice as much. The yellow, oily liquid dripped down to the floor, almost immidiately evaporating into creamy white vapor. Nico was starring straight into the spider's eyes preparing himself for battle, but all of a sudden the monster turned toward the son of Jupiter and jumped onto the blonde, its weight crushing the Roman hero. The blonde screamed in pain, poison dripping from the giant fangs onto his sun-kissed skin, instanly burning it. Jason felt like he was being punctured by a thousand needles while being drowned in lava and ran over by a bus, it was agony. Suddenly, the weight of the spider was gone off his body and the next thing he saw was Nico getting some ambrosia and nectar out of his backpack and feeding it to him. The moment he felt a bit better, he got up and looked around for the moster, but he only saw a purplish black cloud where it should have been.

"What did you do?"- Jason asked the olive-skinned demigod.

"I gathered all the shadows from this chamber into a single orb of darkness and fired it at big and creepy." - answered the son of Hades with a grin on his face.

"Since when can you do that?" - wondered the blonde.

"Since now, I guess." - said the Italian jokingly.

"But it won't hold forever, so let's try to open that door"-explained the Ghost King. He once again raised the sceletons figuring they would all the strenght they can get. Despite their best effords the door didn't move an inch, than Percy thought of an idea.

"Nico would you be able to shadow travell us on the other side of the door if you knew what if looked like?" -asked the son of Poseidon.

"I think so." - said the Italian with a wondering expression on his face.

"Good" – stated the Sea Prince.

After that Percy walked through the door and was now on the other side. It was a dark semi-circular room with walls and floors identical to the one Nico and Jason were currently in. There was a door on the other side and the word 'music' written in ancient Greek was on it. Percy got back to the others and described the room to Nico. In an instant shadows were gathering around the three demigods and they were teleported on the other side of the door and not a moment too soon as they heard giant footsteps coming from the chamber they were in seconds ago. The three walked over to the door with the word music on it. It opened all on its own and they couldn't believe what they saw. In front of them was a huge, beautiful audithorium. There were probably a few thousand seats made of rock and the stage was made out of gold, it must have cost a fortune. The curtains were red and silky but what really caught the boys' eyes was the golden letter on them. They said Play with your hearth and not with your mind! Anyway on the stage there were more musical instruments than there were demigods at both camps. Among the others Nico saw the 'queen' of them all – the violin. Immidiately the son of Hades realised what the writting meant. He grabbed the beautiful instrument and began playing 'Spring' by Vivaldi. The other two watched in shock.

Where did Nico learn to play like that, I swear that is the most beautiful thing I've ever heard. - thought Percy to himself. He didn't know some major things about his Ghost King. Wait, HIS Ghost King?! Percy shook his head at the thoughts he was having.

Nico had finished playing when a trap door opened on the stage and he fell in. Jason and Percy jumped right after him and the door closed. The three of them were now standing in a dark corridor unable to see anything in front of them.

"We need to get to the other end of this corridor, there is something there!" - said Nico.

"How do you know that?" - asked the son of Jupiter.

"I can see in the dark, child of Hades thing." - answered Nico a little annoyed with how obvious the question was.

So they walked to the end of the corridor and were shocked at what they found. Standing in front of them were the minotaur, Percy's first monster, the trojan sea monster, one of Jason's first monsters , and Bianca di Angelo with her arrow. The monsters jumped at Percy and Jason, to Percy's surprice the minotaur was able to touch him. Meanwhile Bianca shot an arrow at her brother.

"You're so weak Nico. Everyone may think you've grown but I know you are still the same sad, pathetic little boy who lost his sister!" - laughed the huntress.

"Bianca, I won't fight you, how did you even manage to ..." - than it hit Nico - "Wait a minute, you couldn't be here, you chose to be reborn, meaning all of this is an illusion!" - yelled Nico, his voice full of rage. After that the illusions disappeared and there was yet another door waiting to be opened.