hey i just defeated the 5th gym leader and got surf now what??

what town are you in?

Go the the left of Hearthrome and surf to Canalve City, its really cool there!

my little brother has that game let me ask him.

he said to go up to the lake where two scientists are blocking it and you talk to this girl and she gives you this medicine. and then you go to the psyduck that are blocking the way and spray them with the potion then the girl comes and meets you.. and wants you to bring this charm to something.. idk what hes talking about so i hope that helps

Okay- go to Jubilife(or Floaroma...) then go towards the left. Surd to Canalave City. Make sure you teach somebody Surf. Do the STEEL-type Gym. It's quite easy. Then,go to Snowpoint City and do the ICE-type gym. While you're heading up that way,make sure to pick up the Waterfall HM. Then,go to the closest house and talk to the man inside. He says he lost a Waterfall HM. He sees you have it,but then decides to let you have it. He also gives you a little something for being honest,I believe. After that,enter Mt.Coronet from Hearthome City,and climb to the Peak. Make sure you have high leveled Pokemon. You will fight the leader then.(I almost forgot-before you head to Mt.Coronet,Your friend will show up and tell you to go to the libray. Go there and talk to Prof. Rowan. He will then tell you to investigate 1 of 3 lakes. After an earthquake.)When you beat the leader,Palkia/Dialga will battle you. Don't use your Master Ball if you want to catch Azelf,Uxie,or Mesprit. Sunyshore will be unlocked so you can do the ELECTRIC-type gym. Then,you can go to the Pokemon League. Hope this helps!