Batman Beyond is an animated television series set in a futuristic Gotham City. It follows a teenager named Terry McGinnis, who becomes the new Batman after discovering the retired Bruce Wayne in his old age. With advanced technology and a sleek new suit, Terry fights crime and faces various villains in a high-tech world. The show explores themes of legacy and responsibility as Terry learns from Bruce, who serves as his mentor. Batman Beyond originally aired from 1999 to 2001 and is part of the larger DC Animated Universe, which includes other popular series like Batman: The Animated Series.