What will I miss if I skip Pokemon Black/White and go onto Pokemon Black 2/White 2?

I was going to buy Pokemon Black/White however I wondered if I should just skip to Black 2/White 2. As far as story goes... well its a Pokemon game not a novel most of the storys in game are just there to hold things together.

Anyway will I be missing anything important if I skip to Black/White?

There are enough differences between the two to warrant playing both versions, but they're few enough that you can jump straight to White/Black 2 without missing out on anything major.

The region, Unova, is generally the same as the first games, however some of the differences are:

• New locations are accessible
• Your journey starts in a new town called Aspertia City (Hiougi Town in Japanese).
• The Unova Pokedex features 300 Pokemon from the start.
• You will be able to capture pokemons from previous generations from the beginning.
• New forms of the three roaming Pokemon from Black and White: Tornadus, Thundurus and Landorus.
• A new story that takes place 2 years after the events in Black & White
• All of the gyms are either modified or new
• The Pokewood movie-making minigame is a new feature to go along with Pokemon Musicals.
• Previous Gym Leaders and Champions from other regions can be battled in the World Tournament.
• Keldeo obtains an alternate form by learning the move Sacred Sword.

Possible Spoilers:

- The storyline involves a new version of Team Plasma.
- Characters from the first game return, such as Cheren, Bianca, and N.
- Iris replaces Alder as the Unova Region Champion.
- Black Kyurem will know the move Freeze Shock, whilst White Kyurem will know the move Ice Burn.
- Black Kyurem is related to legendary monster Zekrom and White Kyurem is related to legendary monster Reshiram.

Source

There are certain in-game references to the story of Black and White version that you won't get. If you have a copy of black or white, you can link it to Black 2 or White 2 (doesn't matter which; I linked my White version to my Black 2 version), and your Black or White character's name will be used in these references.

The story is a continuation of the Black and White.