Percy Jackson is a six-year-old boy who for the past three days has been running from monsters after his mother was killed by his stepfather right in front of him. His stepfather then tried to kill him but all the pipes in their apartment exploded. The water in them flowed and surrounded his stepfather and Percy ran. Percy is currently being chased through central park by a massive black dog. He knows that he can't run for much longer and just when he contemplates giving up, he sees two people sitting by a fire talking. Percy then runs and jumps over the fire with everything he has left. When he hits the ground, he turns as fast as he can and is scared to see the dog run and leap but just as the hound gets over the fire it erupts into a pillar of flame and incinerates the hound. Percy then feels arms go under his legs and head as he is picked up by the girl who was sitting by the fire and the man is standing next to her. The man looks into his eyes and then with a little anger he says to the woman "Hestia this boy is a child of Poseidon." Hestia replies "I know brother, but I think you should take him and raise him like your own son.". The man thinks about it then after some arguing from Hestia he agrees. Hestia then says, "thank you Hades". Hades then adopts Percy and Hestia decides to make him her champion. Hades then takes him to the underworld and has him train under the greatest heroes to ever live like Achilles, Theseus, Odysseus, and the original Perseus

One year has passed since Hades adopted Percy who is now seven. Percy has since mastered the use of a sword and is pretty good with a bow and is decent with a spear. One day word reaches the underworld that Zeus has sired a child and that she is being escorted to camp-half-blood. When Percy hears this, he gets an idea and then tells his father he should send him to help escort her because if he helps get his daughter to safety Zeus might be a little nicer to him. Hades agrees with this plan and says he will send him to where they are Persephone who is sitting next Hades gets up and gives him a hug and kisses him on the forehead and tells him to be careful then Hades sends him to where the daughter of Zeus is. When Percy arrives, he sees that there is four people being attacked by a pack of hellhounds. He concentrates and shadows start pooling around him and then he is covered in jet black armor and he pulls out a pen and pulls off the cap and it extends into the bronze xphios riptide which he got from his aunt Hestia for his birthday. He also holds his other hand out as a jet-black sword shoots out of the ground and into his hand. Percy then charges towards the pack of hellhounds and just before he gets there, he yells "over here you big mutts". The hellhounds turn to him and he then starts his assault before they can even move half of the monsters are destroyed and the rest follow moments later. When all the hellhounds are gone Percy dispels his armor and sword and caps riptide then he turns to the group he just saved. They are all starring at him amazed that a seven-year-old kid just destroyed like ten or more monster. The oldest steps forward sword raised and asks who he is. He says his name is Percy Jackson son of Hades and Persephone champion of Hestia sent to help escort Thalia daughter of Zeus to camp. He then asks them their names the boy in front of his says he is Luke Castellan the other guy says he is Grover the satyr. The older black-haired blue-eyed girl says her name is Thalia the youngest girl has blonde hair and gray eyes and has some cut and seems very nervous. When Percy sees this, he puts his hand on her shoulder where it glows orange for a minute and her wounds heal and she relaxes, and she says her name is Annabeth. He then has all of them swear on the Styx not to reveal who he is unless he tells them they can. After this he uses one of his abilities as Hestia's champion to create home cooked meals to make them what they want to eat. They travel for a week heading to camp after walking for two days straight they set up camp for the night Percy stays up to keep watch and use his abilities to sense stuff while in the shadows to keep an eye on the ever-growing army of monsters following them. Percy is walking around at the edge of their fires light when he senses several people approaching their camp and one of them is very powerful. When they get close enough, he shouts who's there loud enough to wake everyone else up Luke and Thalia draw their weapons and walk towards Percy who has drawn riptide and then he shouts out "Are you a friend or foe." then a female voice replies "Friends of a male not likely.". When he hears this Percy pales because he knows who's surrounding them, he tells them that they should all drop their weapons and kneel. The same female voice says "Wise decision boy. You know who we are then?" Percy then replies "Yes, I have a pretty good idea. If my hunch is correct you are the hunters of Artemis and, one of the two people approaching directly in front of me. I believe is the Olympian goddess herself am I wrong?". A different voice that sounds younger but more commanding and powerful replies "Yes boy you are correct I am Artemis and the people surrounding you are my hunters." as she finishes talking her and her hunters emerge from the woods forming a circle around their camp. The two in front of Percy are both looking at him when he hears one of them gasp, he looks up to see that the other girl is the lieutenant Zoe Nightshade. He sees she is looking at riptide when she asks" Where did you get that sword?" Percy tells her he was given it by his patron for his birthday. He is about to ask her why when he get a vision of Zoe in the past giving Hercules the hairpin that would become riptide. He stands up and walks to Zoe and holds out the sword and tells her to take it that it rightfully belongs to her. Then from behind Percy someone says, "Yes Zoe Nightshade is the creator and rightful owner of riptide." when he hears this Percy smiles hands Zoe the sword turns around and says, "Hello Aunt Hestia." then he gives her a hug. Hestia says, "Hello how are you doing my champion" Percy replies "Pretty good other than the fact that half a dozen male hating teenage girls are pointing bows at me." Hestia breaks the hug and looks at Artemis and asks her to have her hunters stand down and she does. Percy turns around walks up to Artemis and kneels in front of her and asks her what they can do for her since he doubts that they just happened upon on their camp by coincidence. Artemis is about to answer when Percy's eyes widened and says, "Lady Artemis get down." and he jumped up and dove to push Artemis out of the way. While in the air a Percy summons his sword twists in the air and swings his sword in deadly arc of black iron. In the air right in front of where Artemis's face had been a hellhound formed from shadows and before Percy's sword hit it swiped with one of its paws and if Artemis had still been standing there it would have taken her head off. The hound's claws instead cut into Percy's arm before his sword sliced its throat and it turned to dust. Then Percy shadow traveled him and Artemis so that they were both on their feet he put his hand on her shoulder and asked her if she's alright.

Percy then senses that the small army of monsters chasing them has gotten closer. So the two groups part ways. Percy and his group head towards camp. When they are 50 feet from the base of half-blood hill. Percy tells the others to get to camp and summons his armor and swords and starts fighting the monsters which had finally caught up to them. He slowly gets pushed back until he is almost at the top of the hill, he is tired, and he almost gets hit by a cyclops club but gets pushed out of the way. He hears a yell of pain and turns to see Thalia getting flung several feet away and landing on the top of the hill. When Percy sees this, he is filled with anger and sadness. He gets up as power starts rolling off him the ground starts shaking as all of Manhattan is hit by an earthquake. Percy slams the tip of his sword into the ground and cracks start spreading from it. The cracks spread out under the army until it covered the feet of every monster. Then from the cracks erupted greek fire that incinerated the monsters. He then hobbled over to where Thalia had fallen. When he reached where she lay he kneeled down next to her and apologized. He got ready to take her soul with him to the underworld he knew it was a fatal hit she took for him. Then suddenly her skin started turning to wood and a tree started sprouting from her chest. Percy then realized that Zeus was turning his daughter into a tree that as long as it lived a magical barrier would protect the camp. He also realized that Thalia's soul would remain in the tree forever. He then shadow travels to his fathers throne room. When he appears he says "sorry father i failed Thalia Grace died." then he starts to pass out

,but not before seing Hades and Persephone rush towards him.