what you do arter you beat the elieght four... first thing i did was go to steven's house, there you will get a pkemon called beldum. then go to the place where you get casteform. there he will tell you that it is raining real hard somewhere. go there. when ou get there you will have to dive. and its at a place where i bet you havent went to berore. there you will find kyroge. after you get it go back to the place where you get casteform. he will say the is a huge DROUGHT somewhere. go there and you will find a cave. and no you do not have to dive. there you will find groundon. after that go to meter falls. there is a new place opened you will need waterfall, surf and i think strenght. there you will find steven. and if you think your ready to battle him you will have to be tough. he has nothing lower than level 75 pokemon. well i had groundon, kyroge, and rayquasa. and beat him with ease. from there on its your choice.