Cerulean City
the game ends
he went to the home on the left of the Pokemon center in the survival area
actually no you should first go to stark mountain and battle him then when buck and looker finish talking you should go inside once more then there should be it
buck is in his house with i thimk is his grandfather or something but talk to to him and he will leave and go return the treasure and heatran stans........CATCH HIM.
in the Pokemon diamond and pearl versions i know that the heatran (mostly a girl) will be at stark mountain go up there with buck go out talk to buck and his grampa go back up to stark muntain heatran is there
you go backto the nearest town and go in all of the houses and you will find buck in one of them. talk to her and she will leave. go back to stark mountain in the same room and you will find the legendary pokemon heatran.
Once Buck takes the Magma stone from Stark Mountain, go to the survival area and go in one of the houses. Speak to Buck's Grandpa and then speak to Buck. He will leave the house. Go back the the place where Buck took the Magma stone and heatran will be there.
Go to survival area and the house on the left he is in. Talk to his grandparent and him.
Go to a Buck's Grandpa's house in survival area and He'll tell you some stuff. Then you have to go back inside Stark Mountain and catch heatran.
If your talking about Diamond and Pearl you go to valley windworks on a Friday.
At Stark Mountain. The first time you go there, Buck will take the magma rock or emblem or whatever. Then you go to the Survival Area and go to one of the houses in it. Buck will say that he returned the emblem or rock. Go back and confront Heatran. GO!
are you talking about luvdisk? then go to the Pokemon league or route 224(must get national pokedex), then use a super rod in the water.