Joelle Siwa and Dove Siwa are sisters, they only live with there mom. When there mom, Jessalynn, tells them that she's adopting a teenager, drama arupts with Dove
Marcus Butler's sister, Melia returns to the UK and Marcus forbids her from dating any of his friends. She never found any of them interesting but when Melia gets angry at Marcus for something he did, Melia runs away from home and Joe is there to help her. That's when they realize that being in the friends zone isn't enough.