Are all parts of the modern warfare story included?

Call of duty modern warfare released in 3 parts MW, MW2 and MW3. In the store only modern warfare is listed. Is it that all 3 parts are included in this one purchase? or do I have to buy MW2 campaign remastered as well to play part 2 of the story? and if so how do I buy MW part 3? its not listed in the blizzard store.