Pokémon Ranger: Shadows of Almia is the second game in the Pokémon Ranger series. The main plot of the game is to gather all sorts of Pokémon in unique way using the Nintendo DS stylus and the touch screen. You can then use the Pokémon to help you bypass terrains (like logs, boulders, ice chunks, ect.), or when trying to capture other Pokémon.
The first game, Pokémon Ranger, allows the player to have either Plusle or Minun as a Partner Pokémon. Now the player can have up to 17 partner Pokémon (one for each type) but may only use one at a time. The first partner Pokémon is a Starly, a Munchlax, or a Pachirisu. (spoiler alert): These 3 partners you can get from the main plot, but for the others you are required to complete certain quests.