The New Akatsuki
Yahiko and Nagato attend a meeting with the Rain's leader, Hanzō. Other members of Akatsuki discover that Leaf's ANBU shinobi are also meeting with Hanzō, and suspect a possible betrayal. They attempt to catch up with Yahiko and Nagato, only to die at the hands of Zetsu and Obito who wanted Nagato to witness tragic reality just like Obito had when he'd witnessed Rin die at Kakashi's hand. Leaf's Root Division and their leader Danzō are revealed to have plotted with Hanzō to end the Akatsuki's rebellion, capturing Konan and giving Nagato an ultimatum: kill Yahiko or they will kill Konan. Choosing for him, Yahiko runs himself into Nagato's kunai, killing himself, leaving Nagato and Konan devastated. Enraged, Nagato uses his Rinnegan to slaughter the Leaf and Rain shinobi by summoning the Demonic Statue of the Outer Path, although Hanzō manages to escape. After this turn of events, Nagato finally turns to Obito, who witnessed the entire meeting. The final scene shows Nagato looking at Yahiko, whose body is now the Deva Path of his Six Paths of Pain, and saying that Yahiko will always be the true leader of the Akatsuki.
Aired 30/01/2014EP 348 - The New Akatsuki

Naruto: Shippuden
Naruto: Shippuuden is the continuation of the original animated TV series Naruto. The story revolves around an older and slightly more matured Uzumaki Naruto and his quest to save his friend Uchiha Sasuke from the grips of the snake-like Shinobi, Orochimaru. After 2 and a half years Naruto finally returns to his village of Konoha, and sets about putting his ambitions to work, though it will not be easy, as he has amassed a few (more dangerous) enemies, in the likes of the shinobi organization; Akatsuki.
(Source: Anime News Network)