"Where Tenten Belongs" (テンテンの居場所, Tenten no Ibasho) is episode 428 of the Naruto: Shippūden anime.
Kushina prepares breakfast for her son, who leaves without eating, angering her. Tenten questions herself as she begins thinking of her fake teammates. She decides to ask for Kurenai's assistance in learning more about genjutsu, however, in her dream world, Kurenai can't use genjutsu, despite being fascinated by them. They discuss various methods of breaking genjutsu without much success. While eating, she is approached by a merchant who saw her fight the previous day, who asks what her problem is. He tells her that there is a shinobi in Amegakure who might be able to help her with breaking such a high level genjutsu, and hands her a map to the village. Despite Konohagakure and Amegakure not being allies, Tenten decides to go anyway, but is captured by Konoha shinobi. They reveal they had intel of a planned Ame-led attack on the village, and that they were tipped she planned on deserting. The find the map to Amegakure on her, which secretly had a missive to Amegakure. Her team-mates and the villagers witness her being taken in, and she realises the merchant who gave her the map is the true mastermind of the plan. In jail, Tenten wonders about her situation, when Lee and Neji call out to her from the window. They say they believe her not to be a traitor, and that if they had supported her publicly before, they'd have trouble helping her. Tenten is touched by the friendship offered to her by her dream world team-mates. They leave, but not before Tenten warns them about the man disguised as a merchant. An explosion goes off in the distance, and the village begins catching on fire. Amegakure shinobi continuously infiltrate the village through a summoning formula. Menma visits Tenten in jail, bringing with him the man disguised as a merchant. He was aware something was going on from looking at his father's documents, and started tailing Tenten when she began acting strange. He hands her weapons' scroll, and tells her to go, having explained the situation to higher-ups on her way to meet her. He explains he somehow understands she's not the Tenten he knows, and that she doesn't belong there. Despite it being a dream world, Tenten offers Menma her help. Hanzō himself attacks the village with his summoned salamander. Menma faces him himself with his full Tailed Beast Mode. Hanzō summons a second salamander, which Tenten decides to fight with the Treasured Tools of the Sage of Six Paths in her possession. The attack on the village is thwarted, and Tenten's team-mates all congratulate her on her performance. Tenten is proud of her own power, and feels like she belongs in the dream world.