Just like the classics with little changed
You begin with your avatar watching TV on the lakes in Shinnoh and going to the lake near you town with your friend and than you do what in every pokemon game you do, catch them all. There is little changed in the story but i feel its better than just being the best trainer. There is a orginization called "team galactic" which wants to create a new universe and they end up summoning a Deity and you stop them. Told you nothing changed....
Except for the New pokemon[which are the most creative since gold and silver.] and the all new online play[im not shelling out 40 bucks! no freaking way!]
Basically its pokemon on the DS! Always relieable and good buy if you like the series.