Stepsister from Planet Weird

Megan Larson (Courtnee Draper) likes her life with her little brother and her single mum, so the news that a stepfather and a stepsister are coming hits hard. Her mother's fiancé Cosmo (Lance Guest) and his daughter Ariel (Tamara Hope) seem a bit off, and Megan sets out to stop the wedding. Steve Boyum's Disney Channel comedy treats a new family as the strangest thing a teenager can be handed.