[Crimsonmon]

Originally Posted by Nico

what is this missing 3 guardians thing everyone is talking about?

I'll put it in spoilers just in case.

Spoiler:

Aizen calls the other three gate guardians to keep Yoruichi and Soi busy after the 'trap' him. That's when Kuukaku and Jidanbou arrive and they use Lightning Tiger Canon on the guardians instead of Aizen, which doesn't do anything, so Jidanbou knocks them out with his fists. While watching, Ichimaru gets caught, and then the anime is the same from that point.