Naruto Shippuden Episode 344, " Obito and Madara ," centers on Madara's arrival on the battlefield and the revelation of Obito's rescue by him after the Kannabi Bridge incident. The episode heavily features the, now, partially-healed Obito recovering in an underground cave with the help of Hashirama's cells and the Gedo Statue, introducing a new ending sequence. You can watch the English dubbed version of the episode on Crunchyroll and Hulu.