<P> Star vs. the Forces of Evil is an American animated comedy - adventure television series created by Daron Nefcy and developed by Jordana Arkin and Dave Wasson, which airs on Disney XD . The first Disney XD series created by a woman, and second overall for Disney Television Animation (following Pepper Ann), it follows the adventures of Star Butterfly (voiced by Eden Sher), the young turbulent heir to the royal throne in the dimension of Mewni, who is sent to Earth so she can complete her education and learn to be a worthy princess, and Marco Diaz (Adam McArthur), a human teenager who becomes her roommate and best friend, as they live their daily lives, go on adventures in other dimensions, and try to prevent the evil Ludo (Alan Tudyk) and his minions from stealing Star's magic wand . </P> <P> Star vs. the Forces of Evil typically follows a format of two 11 - minutes long independent "segments" per episode, with individual writing and directing credits for each, although it occasionally opts for a single, 22 - minutes long story instead . The first episode aired on January 18, 2015 on Disney Channel as a special preview, becoming the most - watched animated series debut in Disney XD's history; the first season subsequently officially premiered on Disney XD on March 30, 2015 . The third and current season started on July 15, 2017 . On February 28, 2017, the series was officially renewed for a fourth season . </P> <P> Star Butterfly is a magical princess from the dimension of Mewni, and the heir to the royal throne of the Butterfly Kingdom . As per tradition, she is given her family's family heirloom wand on her 14th birthday, but after she accidentally sets fire to the family castle, her parents decide that a safer option is to send her to Earth as a foreign exchange student, so she can continue her magic training there . She befriends Marco Diaz and lives with his family while attending Echo Creek Academy . Star and Marco must deal with everyday school life while protecting Star's wand from falling into the hands of Ludo, a villain from Mewni who commands a group of monsters . Star and the folks from Mewni are able to travel across dimensions using "dimensional scissors" that can open portals . </P> <P> Nefcy said she originally created Star as a girl who wanted to be a magical girl like Sailor Moon, and Marco as a boy who was obsessed with Dragon Ball Z and karate; they would be enemies instead of friends . In this earlier version, Star did not have any actual magical powers; she instead would approach and solve problems primarily through the force of her determination alone . Nefcy began pitching the show when she was in her third year of college, when Cartoon Network was actively soliciting the creation of pilots for prospective new shows . Nefcy originally placed Star in the fourth grade, reflecting on a time in her own childhood when she held a self - described obsession with the animated series Sailor Moon . However, Nefcy later adjusted the character's age to fourteen during the time she made her series proposition to Disney . An executive at that time made the suggestion for Star to have actual magical powers . Nefcy worked this concept into the show's current iteration, along with the idea of different dimensions as show locations, the framing device of Star being a foreign exchange student, and the plot aspects relating to Star being a princess and the subsequent consequences of her royal birthright . Nefcy said that the overall concept has evolved over about six years . </P>

Star vs. the forces of evil season 3 synopsis
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