An Uchiha Anbu

is episode 357 of the Naruto: Shippūden anime.

Summary
As word spreads that a new member was joining the Anbu — the youngest one ever and an Uchiha, the current members deem that they would test the young man's mettle. Meanwhile, Guy makes a bid to Hiruzen to join the Anbu after realising that Kakashi was becoming withdrawn once more, however, he is rejected not only by the Third, but by Danzō as well who informs him that he lacked the quality of "darkness". Fugaku congratulates Itachi for his enrollment into the Anbu reminding him of his obligation to the Uchiha. Danzō, on the other hand, tasks Itachi with keeping them informed of the clan's actions. Danzō and Hiruzen orchestrate a two-sided mission against the Prajñā Group: Might Guy, Kosuke Maruboshi, and two other ninja were to exchange scrolls with the group while Kakashi and Itachi were to assassinate the group that was suspected of double-crossing Konohagakure. The higher-ups suspicions are confirmed when the Prajñā Group attacks the Konoha-nin; a battle ensues and the Prajñā-nin are defeated. Horrified by their real mission, Guy watches on as the the two Anbu assassinate the opponents. Returning to the village, Guy is debriefed and pleads with Hiruzen to release Kakashi from the Anbu, fearing what he had become. Meanwhile, at the Naka Shrine, the Uchiha hold a meeting with Itachi reporting the standing of the village as Shisui watches on. As he sits down, Itachi spots the stone monument behind his father and begins reading it with his Sharingan.