Well that (de)escalated pretty quickly.
Freezing returns; taking that term "literally" now, as the plot mainly takes place in Alaska. Satellizer, Kazuya, Rana, Chiffon, and Beth return; meeting other Pandoraii, getting involved with the mysterious "E-Pandora Project," and (for Satellizer) dealing with a re-opened wound that is her half-brother.
Fans of the manga version may not like the switches and changed within the anime, but everyone else who'd been watching this anime should be glad: The upskirt panty shots, nudity, gore, and useful male leads return as if they've never left. What you get more of is the "Sis-Fist" and the psychological suffering.