Percy is eighteen years old in this story.
In a distant timeline to the one you are familiar with, the Gods of Olympus have decided to help humanities advancements. Now the Gods hold the highest ranks in Earth's galactic military. Supreme Commander Zeus has given his brothers, Poseidon and Hades, the rank of Fleet Commander, while the other Gods have become Generals.
In the Half-blood training facility on the moon, a group of cadets polish their weapons as a centaur supervises. Their supervisor is also their trainer, Corporal Chiron. Chiron stops when he reaches a cadet who is polishing the bronze handle to a plasma sword, careful to avoid the activation switch, and completely ignoring his bronze pistol, which is so dirty it looks like copper.
The cadet has messy, black hair and green eyes. He wears the same style of clothes as the other cadets, just in a different colour. He, like all other cadets, wears a black body suit made out of a light, breathable fabric. He wears a Dark blue chest plate, crotch guard, gauntlets, shoulder guards, knee guards and boots overtop of it, the colours worn by a son of Poseidon. He seems content with his work on his sword.
"Percy," Chiron tells him, "Your sword is a secondary weapon. You should be focusing on your pistol."
"With all do respect sir," Percy looks up at his trainer, "what good is a pistol in the hands of someone who, no matter how long he trains with it, can't hit the broadside of a barn. I'm better suited for close combat anyway."
"Yeah," a female cadet in red armor shouts, "that'll make it easier for the enemy to kill you."
"The last time I checked," a different girl, this one wearing grey armor, interjects, "you aren't such a great shot yourself Clarisse."
"Oh, you wanna go?" Clarisse jumps up.
"That's enough," Chiron interjects, "now I suggest you go finish packing your things. By this time tomorrow, all of you will be chosen for a troop."
"All but one of us," Clarisse smirks at Percy as she leaves the room, "I mean seriously, what good is a soldier who can't use his gun?"
While the other cadets head for the barracks, Percy stops and looks at a nearby bulletin board. It shows the generals who are selecting cadets for their troop. General Nemesis has a knack for choosing the children of minor Gods, General Artemis only selects girls, General Ares only chooses his own children and General Athena selects cadets with large skill sets. What chance does Percy have of being selected by one of them? Percy sighs as he heads to the barracks. When he gets there, he starts packing some supplies, but stops when Clarisse's words start ringing in his head. He sets a spare armor plate down and sits down, leaning against the wall.
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Percy sits with the other cadets in the auditorium. The auditorium itself isn't very large, but the people who speak to the cadets in it make it seem bigger. Percy watches with boredom as everyone else is selected by the four generals standing on the stage, leaving him seated. Percy doesn't get his hopes up as everyone gets chosen, except him. The generals leave and the other cadets start filing out of the rows. Annabeth tries to comfort Percy when the auditorium doors slam open.
"What is she doing here?" A cadet asks as footsteps grow louder, coming closer to Percy.
"She never selects cadets," another cadet exclaims.
The new arrival comes into view, it's general Hestia, a general whose troop acts as the Earth's defence. She looks straight at Percy, causing him to stand at attention.
"Percy Jackson," she states in a professional voice, though Percy thinks he hears a hint of panic in it, "we need your help on Earth. The general who was going to come here to select you, general Iris, has gone missing."
"Yes ma'am, right away."
Percy rushes off to the barracks to collect his belongings, then heads to the hanger. He sees the other cadets boarding ships heading out to distant areas of the galaxy where the front lines are located. He then boards general Hestia's personal ship, which will take him back to Earth.
"I have reason to believe," Hestia said as the door slid shut behind Percy, "that general Iris has been missing for a longer time than the others believe."
"Why is that ma'am?" Percy asked.
"Because I know her better than anyone."
"So, are you saying that an impostor has been leading her troop."
"I'm saying that the impostor has been selecting the soldiers in her troop from the beginning."
"And now the impostor is missing?"
"Yes, and we must find her. If we find the impostor, we may be able to find the real Iris."
Percy sits in silence for the rest of the trip, thinking about his first mission after training for four years.
I have not decided whether or not to add romance to this. Tell me if I should and if so, who should Percy get romantically involved with.