OK K.O.! Let's Be Heroes Episode Rating Graph

In the Cartoon Network City, K.O. is summoned by the villain Strike who plans on eradicating all the heroes from the Cartoon Network Universe. Now K.O. must team up with Garnet from Steven Universe, Ben Tennyson from Ben 10 and Raven from Teen Titans Go! to stop him.

As the public wonders what has become of Chip Damage, Elodie recruits K.O. in reactivating the Chip Damage robot in an attempt to improve on him and bring hope back to everyone. In their haste, they end up damaging Chip Damage's image and it takes an intervention from retired hero, Dr. Greyman, to remind them what makes an actual hero.

When K.O. realizes Pow Cards exclude Dendy due to her Kappa heritage, he’s devastated by the clear discrimination. So the two of them decide to sneak into the factory that makes the Pow Cards to see if they can change it.

K.O. loves his mom Carol, but Fink arrives to turn that all around by making fun of him and calling him a "mama's boy". Feeling miserable, K.O. gets help from his "inner monologue," which is actually Shadowy Figure, to get even with Fink by getting angry. K.O. channels his anger to battle her, but it only seems to make her even more malicious.

K.O.'s monologue details his journey to being a hero. Dynamite Watkins reports on a day at Gar's. Lord Boxman explains where all the robots come from. K.O., Rad, and Enid try to figure out Mr. Gar's adventure. Enid and Rad switch jobs.

K.O., Rad, and Enid break into Boxmore to get back their doors when they find themselves in a box shaped room that does not have any doors or windows. As they wait it out, they begin to realize that something is not right. Rad and Enid are, in fact, replaced with goo clones and K.O. must now get to the bottom of this mysterious situation.

Rippy Roo makes a sudden appearance at the plaza and immediately begins catching up with Carol by revealing what she had been doing all these years after leaving P.O.I.N.T. Meanwhile, K.O. ventures into Rippy Roo's pouch after a creature called a Mecha Maw steals his prized binder of very rare Pow Cards.

Rad and Red Action once again get caught in a feud. Getting annoyed at how far their bickering has gotten, K.O. and Enid use Red Action's time travel belt to travel to the past to make sure that the two do not bicker with one another. When they cannot find the problem, Rad finally reveals that it involved the events of "You're Everybody's Sidekick".

Noticing that K.O. and Enid are sad that Rad is still on Planet X, Mr. Gar gives them his old space bike and tells them to take a vacation. The two arrive only to learn that the shape shifting Cosma has devoured the planet whole. As K.O. and Enid desperately attempt to rescue the planet from being digested, Rad and his family do not seem to care.

Rad starts feeling uncomfortable when K.O. begins exhibiting negative behavior that he picked up from him, Mega Football Baby and Bellbeefer. He tries to hide his love for kittens as well as him volunteering at the local animal shelter. When Mikayla infiltrates the shelter and begins attacking everyone, Rad has to convince K.O. to drop the macho thing.

The Bodega is unexpectedly visited by Sonic the Hedgehog and Miles "Tails" Prower, who aid K.O. in rescuing his friends from Lord Boxman. As Sonic tries to help K.O. with new techniques, Tails feels left out especially when Sonic starts calling him his "little buddy". When K.O. gets roboticized, Sonic must return him to normal.

K.O. once again is spending time with Professor Venomous in an attempt to bond with him. He creates Carl, a gelatinous blob-like creature, but it ends up getting loose, forcing the two to chase it down. As Venomous starts to become distant from the whole ordeal, K.O. begins to suspect that something is up, resulting in T.K.O. taking charge.

K.O. is tired of being small, so Rad gives him a candy bar that can increase his size. However, K.O. soon realizes that being big isn't all it's cracked up to be, when he accidentally hurls Mr. Gar's car keys in the sewer while trying to help him (due to his increased size), and must shrink to be able to retrieve them.

K.O., Rad and Enid are now full time heroes at the Bodega, with new hires replacing their old positions. Mr. Gar and Carol send the trio out while Dendy acts as their off sight support. While everyone is happy with the new set up, K.O. feels that he is not contributing much and is concerned when a dragon begins attacking Ted Viking and Foxy's house.

When the power goes out at school, K.O. and Dendy go out and investigate. K.O. feels bad for Dendy because the other students continuously praise him, but look down on her. They discover that Small Calf Demon is behind the power outage, but when K.O. gets kidnapped by him, Dendy must step into action and use her techno abilities to defeat the villain.