is a popular American animated magical girl series created by Daron Nefcy for Disney Channel and Disney XD . The show follows the adventures of Star Butterfly , a reckless and fun-loving princess from the dimension of Mewni, who is sent to Earth as a foreign exchange student to safely practice using her family's magical wand . On Earth, she lives with the Diaz family and befriends their son, Marco Diaz , a cautious boy who helps her battle interdimensional monsters and navigate high school life . Key Series Details WAIT... Remember Star vs. the Forces of Evil?