bleh, i can find all my books except the starcraft ones, anyway, the jist of it is that in the distant future, most of the inhabitable places in the galaxy have been put under human control, and they know of no other intelligent species in the universe, so, the UED
(united earth directorate) goes on a mission to cleanse the world of all of the criminals, causing the most widescale genocide i nthe history of the earth, killing billions, and when there were few enough left, they were imprisoned. The government, however, wanted to do a study to find other planets that could be considered inhabitable, so before all of the criminals on earth died in a cell, the scientists took apporiximately a million or something, put them on three ships, one with the most advanced comm system in the history of mankind, and launched them off asleep (you'd think they'd learn from australia that they'd find land they'd want back).
The lead ship, however, malfunctioned, and veered of course, without the advanced cpu leading them, the other two ships, completely unmanned, except for the computer on the first ship leading them, veered as well, for what was guessed to be a few hundred years, one ship landed on one planet, one on another and so on, all within the same galaxy, and the survivors found themselves on inhabitable planets (except for one where they all died, there were actually 5 or so but some died and one landed on the same planet as another). at first these people, later to be dubbed "Terrans" had no idea of the other civilizations, until they grew to space superpowers, at which time they found their brethren, rejoiced, and then the biggest colony started waring with them.
this was short lived however, because as they would soon find out, a grand plan had the Terrans and the Zerg
(failed attempts at playing god by the Xel' Naga
) meeting in a grand battle to shake the stars.
"hey what do you suppose happened to those criminals we sent off and lost communication about?" Lenny- "it's a secret" Carl- "shuuutuuuuuup"
"The terrans will be a big problem for the zerg, the zerg for the protoss, and the protoss for the terran, use this strat in game"