What is the final episode of teen titians?

Answer 1

'Things Change' ; The Teen Titans return home and they fight a creature that can transform into any substance it touches. Beast boy discovers that Terra is alive (though her statue is not in stone anymore), but she remembers nothing about her past life and doesn't have power to move rocks. When Beast Boy leaves and goes to all the places they went to on their date, he fights Slade. As Slade explains that Terra doesn't want to remember him, Beast boy gets upset and claws off Slades mask it turns out to be a robot. Beast Boy returns to her, but she tells him that things were never the way he remembers. He gets a call from Robin and goes to help the Titans.