Go and talk to the great Pokemon master in jubilife city.
Chat with our AI personalities
after you bet crasher wake go near the great marsh and you'll find a grunt keep on following him till he starts battling. after that you'r rivel ---- will challenge you.
Near the entrance of mt. Silver or at the great marsh
Talk to a team galactic grunt (near great marsh) and he takes off running follow him and he will lead you to a lake. at that lake they wont let you in and cynthiawill tell you to go to celestic town to deliver something
I believe that's the one who's in Pastoria City. First you have to beat Crasher Wake before you can do anything that with grunt. Afterwards I believe something will happen in the Great Marsh and you'll go near the entrance building and then the grunt will come out and start running away so you have to follow him until he battles you. After he battles you, he'll leave and then if I recall correctly Cynthia will come by either there or if you go up a little bit.
go to the great marsh in Pastoria city catch 5 pokemon.when the game is over a girl near near the door will give you it