Note - I know that these two stories happen in to different eras, so ignore the fact that I'e written it together. Enjoy!

Chapter 1

It was just after winter. Rain was thundering upon the roof of the Hades cabin and Nico di Angelo couldn't sleep. Usually, it never rains at the camp, but the campers had an argument with the wind gods and they were taking revenge on them by disrupting their daily activities. And the camp was full of demigods though it was January.

It was almost dawn when he gave up on the idea of sleeping. Nico put on his jacket and strolled towards the canoe lake. The sky in the east was orange, meaning that the sun was covered by rainy clouds.

Rain was falling hard on his face as he sat down on the pier facing the lake. Nico was suffering from too much of sleep deprivation. Yesterday too, he lost hours of sleep because he was disturbed by a dream.

It was usual for demigods to have dreams. It might be about their past, present or future. Sometimes they come as a reminder or as a warning, or sometimes both. The nightmare he had yesterday scared the hell out of him.

Nico really didn't want to think about the dream, but it kept flashing through his mind. Hundreds and hundreds of men clothed in long black robes and a whole crowd of monsters walking towards the Parthenon, the ruined Parthenon at Athens.

Nico shuddered and closed his eyes, but something didn't feel right. Though rain was crashing all around him, but not a single drop of water fell on him.

'Hey son,' said a rough voice from behind.

Nico looked up. A grown man was holding a black umbrella over him. He was wearing tight leather jeans and a black t-shirt with a leather jacket over it. Nico's first instinct was to run as fast as possible away from the man. But he recognized the prominent face. Surely, this man had more swag and coolness in him than his father. But, it was Hades alright.

'What's with the clothes?' asked Nico squinting up at his father. 'And why are you at the camp?'

'I was feeling like I should get a new attire, the old one was getting too boring,' Hades said and tapped the ground with his foot. A skeleton of a human rose from the soil where his foot touched. The skeleton gingerly took the umbrella from Hades and stood behind them holding it over Nico.

Hades sat down next to Nico on the pier. It was uncomfortable and awkward enough that a dead human was listening to their father son conversation, but the fact that Nico's father was sitting next to him was the most uncomfortable thing ever. They didn't have the relationship that a usual kid has with their parent. Hades was a god, and gods were godly creatures. But Hades was completely blind to the awkwardness.

'Umm, why are you here?' Nico asked again.

'It's a long story' said Hades as he swiftly removed his jacket and kept it aside.

Nico noticed that "Meet me at hell" was printed on his father's t-shirt. And he feared that the conversation was going to last long because Hades was getting comfortable with the circumstances unlike Nico.

'You will be facing an enemy who has powers which are unknown to you demigods, you have to be ready for that and that's why am I here.' Hades said.

'What kind of powers?' asked Nico startled by the direct answer. He was surprised to hear that there was more to learn about the world. He has traveled a lot and he didn't even think that there could be something out there he wouldn't know.

'You'll get to know soon enough, but you have to help me with my plan.'

'Which plan?' Nico was seriously scared and furious at this point. Don't gods ever learn a lesson? Don't they remember what happened to Hera and many other gods who tried to help them but made it worse in the war they had last year?

'I personally feel like I should set things right, so I just need you to persuade Percy Jackson for me, persuade him to help me,' Hades said.

'What are you going to ask from him?' asked Nico. He knew that Percy wasn't the biggest fan of Hades, and after all the things happened in the year before, Percy was taking a break.

'Well, not much. Percy, Annabeth and Grover are going to mend the bridge between the other party and us. If Percy agrees to do this, then Annabeth and Grover are obviously going to join him, and now it's your job to make him do this,' said Hades.

Nico couldn't believe a word he was hearing. How was he supposed to persuade Percy when he didn't even know what was happening. And what was this other party? Surely, not some other group of demigods. He would know if it was.

'Maybe if you tell me more, I would consider,' said Nico to his father blatantly.

'I would tell you if I can, but I have no choice but to keep my mouth shut because big brother ordered us to not interfere,' Hades said with a big scowl on his face.

'Then why can't you listen to Zeus? If he said not to interfere, you should be doing that.'

'The main reason of this animosity relates to me in a way that no one else knows, that's why,' Hades said. 'Meet me near your cabin with Percy Jackson in thirty minutes.'

Hades disappeared into thin air and the skeleton vanished along with him. Nico was so mad at his father that he almost fell into the water trying to stand up. Thankfully the rain has stopped. Chiron must have complained the disturbance to Dionysus.

Nico could just ignore Hades's request because he didn't blackmail or forced him to do it. But he feared the consequences.

He reached the Poseidon cabin and halted. His relationship with Percy was a unique one. When he was a kid, he had a big crush on the elder guy. But now, it has changed because Percy wasn't his type at all. And he had Will Solace. Nico knocked on the door.

Seconds passed. Nico could hear a whispered conversation behind the door. Maybe Tyson was there. But Nico didn't recall seeing Tyson at the camp for a long time. Nico knocked again.

This time Nico heard someone approaching the door. Finally.

'Hey Percy,' Nico greeted the black haired boy who opened the door. His eyes were puffy from sleep and his hair was ruffled.

'Do you know what time is it? Just come in,' Percy said yawning.

'I'm really sorry that I interrupted you, but I need a favor from you and it's urgent,' Nico said as he came in. Nico wondered who he heard talking before because there was no one else in the room.

'And it couldn't wait until its morning?' Percy asked.

'Unfortunately no,' said Nico. 'By the way I thought I heard noises before, someone talking'

'Oh,' Percy went red. 'It's just Annabeth, she was here during the night since she couldn't sleep and you know it's against camp rules so it would be nice if you don't mention this to anyone.'

Nico watched open mouthed as a drowsy Annabeth crawled out of under Percy's bed.

'Hey Nico,' she said and sat down on the bed. 'What kind of help do you need?' it was clear that she wanted to change the subject.

'Umm… I know this will sound weird, but Hades wants to talk to you two and Grover and he's forcing me to take you to him.'