Following the shocking results of the All Valley Tournament, Season 5 finds Terry Silver expanding the Cobra Kai empire and trying to make his "No Mercy" style of karate the only game in town. With Kreese behind bars and Johnny Lawrence setting karate aside to focus on repairing the damage he's caused, Daniel LaRusso must call on an old friend for help.

Season 4 finds the Miyagi-Do and Eagle Fang dojos joining forces to take down Cobra Kai at the All Valley Under 18 Karate Tournament... and whoever loses must hang up their gi. As Samantha and Miguel try to maintain the dojo alliance and Robby goes all in at Cobra Kai, the fate of the Valley has never been more precarious. What tricks does Kreese have up his sleeve? Can Daniel and Johnny bury their decades-long hatchet to defeat Kreese? Or will Cobra Kai become the face of karate in the valley?