To the left of the main entrance there is a female camperwho you have to beat in battle. When she asks you what fossil you want, choose "Plume Fossil".
She's the backpacker. She's on the first floor.
there r three ways to get him.one, he can be your "starter", two,he can be your partner, three, u can get him in waterfall pond,after u meet rayquaza the first time but u will need waterfall,it is in the bueried reilic,u can also take the first step to getting lucario,the strongest Pokemon in the game.u need a key,and u will find the hm on floor 80 Hope this helps! -Bridget wacholtz