The games follow the quest of Nate or Rosa (depending on the player's gender) and their friend Hugh, as they wander across Unova. The games are centered around the reformation of Team Plasma under the tyrannical rule of Ghetsis, who was defeated by Hilbert or Hilda in Pokémon Black and White. The player now travels across a different section of Unova starting west of Castelia City. Like all previous Pokémon games, the player must go to and beat the leaders of 8 gyms, defeat the Elite Four, and become the Champion. However, unlike previous games in the series, Pokémon Black and White 2 are direct sequels to the original games instead of being a remake.