Catastrophe
The players leave the Net Slum and separate for a bit, but meet up again in the Church and safeguard Subaru and Tsukasa. Sora is sent after them by Morgana and is given help by her to defeat them. A great battle ensues, and Tsukasa decides to fight back and not run anymore. Maha starts to disobey Morgana, and is hit by one of her creations. Subaru, Tsukasa, and Mimiru are transported to an unknown destination.
Aired 19/09/2002EP 25 - Catastrophe

.hack//SIGN
A young wavemaster, only known by the alias of Tsukasa, wakes up in an MMORPG called The World, with slight amnesia. He does not know what he has previously done before he woke up. In The World, he is suspected to be a hacker of the Crimson Knights, as he was seen accompanying a tweaked character in the form of a cat. Unable to log out from the game, he wanders around looking for answers, avoiding the knights and other players he meets along the way.
As Tsukasa explores The World, he stumbles upon a magical item that takes the form of a 'guardian', which promises him protection from all harm. Subaru, the leader of the Crimson Knights, along with several other players who became acquainted with Tsukasa, set out to investigate why Tsukasa is unable to log out, and attempt to get to the bottom of the problem before it gets out of hand.
[Written by MAL Rewrite]