Mackenzie Ziegler is the "It girl" at North Hollywood high school. She's gotten with most of the guys at her school and more. Simply by convincing them that she loves them. Her best friend is Brynn Rumfallo. She's also known as North Hollywood high's biggest heartbreaker. Johnny Orlando has always been in love with Mackenzie Ziegler. He went on a world tour when they started high school. He hasn't seen Mackenzie for the past two years. How will he feel when he finally sees her again? And, how will he react to her newfound reputation? Mackenzie and Johnny have practically been best friends since they were born. They told each other everything. They were inseparable until one day, when Johnny told Mackenzie that he was going on tour. She was absolutely heartbroken. When he comes back he meets a whole new Mackenzie. Nothing like the one he knew two years ago. A lot has changed.