It basically starts off showing what happened before Ichigo emerged from the garganta. The first thing he does is fire off a massive Getsuga which surprises everyone there. Aizen, of course, blocks it using kido. I think he taunts Ichigo and says he knows about his hollow form already and is basically just trash talking.
Ichigo uses his mask and gets ready to use Getsuga again, but Aizen pretty much just flash steps circles around him which frustrates and surprises him. Aizen gets right up to his face and continues taunting him. Ichigo seems terrified until Komamura grabs his hand and talks to him.
When Ichigo comes to his senses and looks out, Shunsui, Shinji, Hitsugaya, Love, Rose, Lisa, Soifon, Omaeda, and Komamura are all in front and ready to help fight Aizen (yea, about time...).