Star butterfly is a magical princess from the dimension of Mewni and the heir to the royal throne of the Butterfly Kingdom. She is given the special family wand on her 14th birthday. He parents decide to send her to Earth as a foreign exchange student to continue her training after she sets fire on the family castle. She makes friends with Marco Diaz and lives with his family while attending school. Story of a magical princess of Butterfly Kingdom from another dimension. As she is also the heiress of the throne, she is gifted with the family wand on her 14th birthday. Unsure of the powers of the wand, she ends up setting the palace on fire following which her parents decide to send her to Earth for getting trained. On earth she befriends Marco, together they protect the wand from Ludo, a villain from Mewni.
An 11-year-old music prodigy attends high school as part of its Advanced Natural Talents program for gifted students and struggles to fit in with the older kids who aren't fond of grade-skipping newbies.