"OK K.O., Let's Be Heroes" is set in the futuristic year of 201X, where the world is populated by video game and manga-esque characters. The series follows the titular character, K.O., and his efforts to become the world's greatest hero, while working at Gar's Bodega (run by the no-nonsense Mr. Gar), a hero supply shop in the Lakewood Plaza strip mall. Alongside him are his best friends and co-workers: Radicles, an apathetic, narcissistic alien; and Enid, a levelheaded big-sister-like employee; as well as other heroes who work and frequent the area.
—Cameron Iacono