A poor-little-rich-girl feels alienated by her mother and enacts a string of torment on her fellow pupils at a girls' boarding school, increasingly aggravating them until she goes too far.
After two girls cruelly impersonate her online in a "reverse cyber bullying" plot, Ashley's reputation is ruined and she and her mother flee a growing threat to their lives. Starting over at a new school, romantic interests and the poignant lessons from an eccentric history teacher draw them out of seclusion until they realize confronting a hurtful past is essential to ensure a brighter future.
Jake is a quiet, sensitive middle schooler with dreams of being an artist. He meets the affably brash Tony at his grandfather's funeral, and the unlikely pair soon hit it off. The budding friendship is put at risk, however, when a rent dispute between Jake's father, Brian, and Tony's mother, Leonor, threatens to become contentious.
New Jersey teen Daniel LaRusso moves to Los Angeles with his mother, and soon strikes up a relationship with Ali. He quickly finds himself the target of bullying by a group of thugs, led by Ali's ex-boyfriend Johnny, who study karate at the Cobra Kai dojo under ruthless sensei John Kreese. Fortunately, Daniel befriends Mr. Miyagi, an unassuming repairman who just happens to be a martial arts master himself. Miyagi takes Daniel under his wing, training him in a more compassionate form of karate for self-defense and, later, preparing him to compete against the brutal Cobra Kai.
94-year-old Eleanor Morgenstein tries to rebuild her life after the death of her best friend. As a result, she moves back to New York City after living in Florida for decades.