please help me
Go to the pokestar studios and when you will come back you will see roxie fighting with some team plasma grunts. Help him and then go to route 20 and find the plasma grunt and after that come back to virbank city and take the ship to cresselia city. You can even use this walkthrough https://m.bulbapedia.bulbagarden.net/wiki/Appendix:Black_2_and_White_2_walkthrough
