The First Day.Luz attends her first day at Hexside, but has trouble deciding what track to enroll in, so Principal Bump places her in the potions track. When Luz gets caught using a crystal ball used by oracle magic students, she is placed in the detention track for mixing magic. Meanwhile, King follows Luz to school and takes over a class. Wanting to escape detention, Luz is brought by her fellow classmates, Viney, Jerbo, and Barkus, to a secret shortcuts room created by "Lord Calamity", which they use to listen in on other classes and learn mixed magic. They become offended after learning Luz had said that she was better than them and make her leave...