Mia glumly arrives at a strange new boarding school where she immediately clashes with the popular girls. But she’s given an amazing gift: a final birthday present from her father that draws her into a beautiful game world called Centopia. Transformed into an elf, Mia makes friends with Centopia’s royalty and discovers she possesses a unique skill. However, when she clashes with the ruthless general Gargona and her unicorn-hunting army, she soon finds this world is no less difficult or dangerous than the one she left behind.

Mocked by Violetta for her embarrassing athletic performance, Mia yearns to retreat from school to the more idyllic land of Centopia. But this time, she has to solve a puzzle to figure out the password. Vincent, a fellow outsider, gives Mia the help she needs but nearly discovers her secret. In Centopia, Mia discovers Phuddle’s dissonant Trumptus is more than meets the ear. Thanks to her help, the elves have a new reason to be hopeful.

An upcoming math test and the threat of an encounter with Violetta have Mia on the run from her real-life problems. Providing her with a place to hide, Vincent lets Mia in on a secret of his own — but she still isn’t ready to share the truth about herself. In Centopia, Mia tries to help a befuddled Phuddle: he’s taken apart the Trumptus, and can’t find his original blueprints! They’ll have to figure it out before it’s too late for all of Centopia.

A scuffle with Violetta leaves Mia worried about having her secret exposed and Vincent frustrated with once again being left in the dark. The unusually grim oracle leads Mia to rescue Lyria in the Valley of Vapors, where she becomes lost — and in need of rescuing herself. Though Yuko and Mo find her in time, the invaluable Trumptus is left behind for Panthea to fulfill the ominous prophecy.

A quick-thinking Vincent helps Mia evade Violetta and her cronies, who are determined to get their hands on Mia’s mysterious book. Still unsure if she can trust Vincent with the truth, Mia disappears to Centopia in time to find Lyria in need of urgent help. She also witnesses an amazing event: the birth of a golden-horned unicorn who may be the key to restoring hope to Centopia.

On a field trip to the museum, Mia and Vincent avoid Paula, the latest of Violetta’s accomplices recruited to spy on Mia. When she finally escapes to Centopia, the excitement over Onchao’s ability to restore dead lands and Trumptus pieces is short-lived when Lyria is taken captive by Gargona and her munculus army. A newly determined Mia vows to protect Onchao with all her might.