You go find rayquaza at the sky tower. (Behind the town on the water)
first you have to beat team magma completely and then you must stop groudon and kyogre from fighting you can do that by calling rayquaza
You go to Sootopolis City. There you will see Groudon and Kyogre fighting, and Rayquaza goes to stop them. Then he goes back to the Sky Pillar.
you have to catch or kill kyogre
you've got to find kyogre and groudon, stop team magma and aqua from doing what ever to them then go to the cave that the old man is blocking in sootopolis city and you can go in
you have to catch or kill kyogre
First talk to Archie and Maxie after you get rayquaza to make groudon and kyogre to stop fighting, then talk to steven then Wallace and Wallace will give you waterfall. Hope that helped.:) After getting rayquaza ( Sky Pillar east of Pacifidlog Town ) to stop Groudon and Kyogre, talk to Wallace in front of the sootopolis gym
He goes to sootopolis city...once you get to sootopolis you will see a video showing rayquaza ordering groudon and kyogre to stop their fight...then he returns back to SKY PILLAR.
Go to Sootopolis City to watch Groudon and Kyogre still fighting then Rayquaza will appear in a cutscene and stop them from fighting. Once you beat the Pokemon league go back to Sky Pillar to capture Rayquaza.
use dive to get to sootopolis and you can go in after you awaken rayquaza in the sky pillar to stop the battle between groudon and kyogre. After you do that, go back to sootopolis and talk to maxie, archie, steven and wallace.scott is champion
Pokemon jade is all about rayquaza, you need to stop team aqua and magma from taking control of groudon and kyogre to get to rayquaza and claim your title as Pokemon champion
You need to find both legendary Pokemon's. (Groudon and Kyogre) After that you shall go to Sootopolis and talk with Steven. He will guide you. As the last thing, you gotta find Rayquaza which is in the Sky Pillar in route 114 (not sure). He will stop Groudon and Kyogre from fighting. Then I think you can go into the gym.
because you need to get kyogre and groudon to stop fighting and to do that you have to go to pacifidlog and surf east until you can find your way in a cave to the north heres a link to the map http://img122.imageshack.us/i/hoennkd5.jpg/