Teen Titans was an animated Cartoon Network show that ran from 2003-2006 and was based on the DC comic series of the same name. Like the comic from which it took its inspiration, Teen Titans was popular among fans and new converts alike.
The Teen Titans themselves were a group of superhero kids trying to protect the Earth, a young team consisting of Starfire, Raven, Cyborg, and Beast Boy, who all lived together in Teen Tower. They were led by Robin, Batman's former sidekick, who had no special powers but did have a really cool utility belt that always came in handy in a pinch.
Terra was also at one point part of the group, but her relationship to it became complicated as she was led astray by evil forces even while she attempted to maintain her friendships.
She couldn't have the best of both worlds but in the end, she made the ultimate sacrifice for her Teen Titan homies. This little throwback clip will give you all the feels. It might be time for a series re-watch!