1. Some gechos about an anomaly in the past. Then everything goes dark.
2. Reboot
3. The fabric of time has been torn, Thera is younger.
4. When you connect, you get the old welcome screen and the code is a much older version of CF with the bygone guilds and areas.
5. If you pledge to a guild, you are auto inducted at L20.
6. This lasts for 4 weeks then the old code, pfiles are restored.

I know it won't happen, but if it did, I'd run up to Arboria and fade/enchant Abjatha the Drinker for my shadow thief who will double backstab your sorry drow arse!