Daniel, a fatherless teenager, arrives in Los Angeles from the East and faces the difficult task of making friends. He becomes the object of bullying by a gang of karate students when he strikes up a relationship with Ali, the gang leader's ex-girlfriend. Daniel asks Miyagi, a master of martial arts, to help him learn karate. Daniel then prepares himself both mentally and physically for the fight of his life

Miguel is in precarious condition after the brutal brawl between dojos, but not much could keep Kreese from continuing to manipulate his students into following his idealization of dominance through physical strength. Johnny keep seeking redemption while Daniel turns to the past for answers, each of them hoping to save their students in their own ways.

Thirty years after their final clash at the 1984 All Valley Karate Tournament, Johnny Lawrence is at his lowest point as a jobless handyman haunted by his wasted life. When he rescues a bullied kid from bullies, he is inspired to resurrect the notorious Cobra Kai dojo. It also resurrects his old rivalry with Daniel LaRousso. Daniel is a successful businessman who may be happily married but is missing an essential balance in life since the death of...