Argumento
Faith arrives in Sunnydale, dividing the Scooby Gang just as Anya's web starts to constrict around them!
Giles learns a shocking secret about the Multiverse that threatens anyone who crosses that threshold.
In related news, Willow just crossed the threshold. Whoops.
Meanwhile, Robin is activated by the Council as a failsafe against rogue Slayers... and Buffy is first on their list.