Pokémon FireRed and LeafGreen/Two Island

'''Welcome to Two Island, the next stop on your tour of the Sevii Islands. There's not much to do here as on One Island, so take a look around and get ready to head out.'''

Two Island
Two Island contains a Pokémon Center, a few houses, and a market. The market is limited, carrying just Great Balls and Fresh Water (the cheaper equivalent of a Super Potion). You can find a Revive using Cut in the southern part of the city.

Move Maniac
To the right of the Game Corner is a Move Relearner, who in exchange for two TinyMushrooms or one Big Mushroom, will teach a Pokémon a move it learned at a lower level. This can allow Pokémon who learn moves at a level they are not obtainable at, to learn them (Such as Charizard learning Heat Wave at level 1).

Trouble afoot
Head over to the Game Corner on the southeast side. A biker will enter who mentions he's looking for his friends, and heads off. The owner then pleas to you to find his daughter Lostelle, who is late with his lunch. Head over to Three Island to find out what's happened.