Mewni is Princess Star Butterfly's home dimension. It is a land with a kingdom ruled by her parents, King and Queen Butterfly. Mewni looks like a typical fairytale locale, with various magical creatures and a royal family. However, outside of Butterfly Castle, Mewni's citizens do not seem to have the best conditions of life: the streets are rather dirty, with seemingly widespread poverty. Beyond the Butterfly family's kingdom is a swampland, where Mewni's indigenous monster population were forced to flee after the first settlers forced them off of their land.