Nagato fights B and Naruto.
Itachi comes to the rescue.
Itachi is broken free from Kabuto's control.
Itachi meets Sasuke.
Sasuke and Itachi fight Kabuto.
Itachi uses Izanami.
Itachi stops Kabuto's Edo-Tensei.
Everyone brought back from the Edo-Tensei is pretty much gone, except for Madara, he broke free from the Edo-Tensei.
A wild Orochimaru appears.
Itachi goes bye bye.
Sasuke still talks shit about destroying the leaf village, hardly knowing that it was Tobi behind the nine tails attack and the main reason behind the massacre.
Someone can fill in the gaps if they wish. I believe Itachi also attacked B and Naruto... I can't quite remember. Have to go back to the past manga chapters to find out.