Signum breaks into the TSAB barrier to help out her teammates with a fight soon following. Nanoha and Fate gain the advantage over their opponents, but a mysterious man arrives to help, and Shamal sacrifices some of the Book of Darkness's pages in order to destroy the barrier and allow the Wolkenritter to escape. It is revealed that the Wolkenritter are programs of the Book of Darkness. (Source: Wikipedia)

Aired on: 10/29/2005