2 years B.U.: Team Sonic and the Freedom Fighters meet.
1 year and 11 months B.U.: Amy and Sally become best friends.
1 year and 5 months B.U.: Incident at Eggman’s Underground Base
[REDACTED]
5 Minutes B.U.: Sonic and Feist meet.
2 Years A.U.: Knuckles sets out to find the Master Emerald fragments
7 Years A.U.: Start of the story.