Second Move of Hueco Mundo! Hitsugaya vs Yammy
Everyone is training to achieve stronger power for the upcoming Winter War. Rukia & Orihime are training there powers, Matsumoto & Yumichika are training for bankai, Renji is training to make Chad stronger and Ichigo is training his Vizard powers. In the midst of all this training, a group of Espada power level Arrancars attack the real world. They are Yammy, Luppi, Wonderwice and Grimmjow, which is run by Ulquiorra. They start there attack on Hitsugaya's group. Meanwhile, Rukia and Orihime try to get to real world. And Ichigo goes looking for Grimmjow. And Urahara goes to the battlefield.
Aired 29/08/2007EP 138 - Second Move of Hueco Mundo! Hitsugaya vs Yammy

Bleach
Ichigo Kurosaki is a rather normal high school student apart from the fact he has the ability to see ghosts. This ability never impacted his life in a major way until the day he encounters the Shinigami Kuchiki Rukia, who saves him and his family's lives from a Hollow, a corrupt spirit that devours human souls.
Wounded during the fight against the Hollow, Rukia chooses the only option available to defeat the monster and passes her Shinigami powers to Ichigo. Now forced to act as a substitute until Rukia recovers, Ichigo hunts down the Hollows that plague his town.