Mackenzie Ziegler is 20 and used to live with her mom Melissa and her sister Maddie in Los Angeles, California. Johnny Orlando is 20 and used to live with his mom Meredith, his dad Dale, and his sister Lauren. They live in Los Angeles, California. The keyword there is used to. Johnny and Lauren are moving out from their house and Kenzie is moving out of her house. Johnny's parents and Melissa hate each other. They hate each other so much they set up rules for their kids. Some rules consist of not being able to talk to each other, text, call, sing, work in school together, etc. The kids loved to hang out together when they were little but can't anymore. Little do they know, as fate has it, they will end up meeting after they move out.