Buck has a house?
in a house in the survival zone
you go to stark mountain with buck then go to her house in the survival area
go to buck's house. trainers over there are lv60 and above.
After you have completed the sidequest with Buck, you have pretty much completed the game. Now you can train your Pokémon, complete your Pokédex and beat the Frontier Brains.
Go to survival area and the house on the left he is in. Talk to his grandparent and him.
Go to Celestic town and her house is near to the left of the Pokemon center.
You go back to the Survival Area and go to his grandfather's house (the house on the left of the Pokémon Centre) and speak to him, then to Buck. Buck will then leave the house. When you go back to Stark Mountain, and into the room the Magma Stone was in, there will be Heatran in it's place, ready to be caught. Best of luck.
you go to the resort area
If buck is with you and he wont leave than you didnt get the magma stone, go and find it. once you do (actually buck takes it), go to the survival area in the house next to the Pokemon center and talk to buck, then go back to stark mountain, enter the room where you got the magma stone, and catch the heatran that will be waiting in there for
go to his grand fathers house in the survival area first talk to his grandpa then 2 buck (it is next to the poke center on teh left
you must go to stark moutin (with buck) and you may find him
Go to Stark Mountain and get the Magmar Stone after Buck has put it back.