Now, for the first time on Blu-ray, you can own all five seasons of this groundbreaking science fiction series in this 20-disc set. Atlantis, built thousands of years ago by the highly evolved ancients, is home base for an elite expedition team from earth. These courageous military commanders and scientists leap through the citys stargate to explore the wondrous Pegasus galaxy and battle the treacherous wraith, who seek control of Atlantis at any cost.