You go to acuity lake
i think you have to beat the Pastoria Gym Leader first
The Galactic Grunt in Pastoria City has it. You need to bet the Gym to get it.
veilstone city but first go to pastoria city hope it helped.
you get secret potion from Cynthia after you chase galactic grunt in pastoria city
you have to beat maylene then go to pastoria city and look for the gym building
keep on going east and follow him
Try going somewhere else or talking to someone. If you are in Snowpoint city beat the gym leader Candice first, if not, then be more specific in your question please.
follow him still dont no where retrace your step how to get to pastoria city
in her gym u have 2 beat veilstone & pastoria 1st
pastoria city
To unlock Sunyshore City in Pokémon Pearl and Diamond you have to beat Team Galactic. They can be found at Mt. Coronet.
I'm pretty sure they headed to Pastoria City. That's where they said they were heading I think.