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.

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.

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.

Still anxious about the tragic events of her last visit to Centopia, Mia can't concentrate on the things that matter, like schoolwork or her duty to her best friend Vincent. But in Centopia, she has another friend in need: Onchao. Now that Lyria's gone, he's bored, lonely and lost. Though Mia is desperate to cheer him up, she soon finds herself in a sticky situation and only the despondent Onchao can help.

Mia is less than enthusiastic about taking her first etiquette class, where she's scolded by the old-fashioned teacher and one-upped by the prim and proper Violetta at every turn. Any chance Mia might have had to redeem herself must wait, as she is needed in Centopia. There, she and the elves find a Trumptus piece in an incredible hanging flower garden. But when Gargona shows up and swipes it, they'll need to do some tricky negotiating to get it back.

Mia's attempt to repair her Centopia book goes awry when Violetta gets Paula to spill glue on its cover. Paula's sheepish apology comes too late and Mia leaves to search for Trumptus pieces in Centopia. Ever curious, Onchao finds a dragon egg instead, and makes fast friends with the newly hatched dragon. But he's captured - along with the Trumptus piece - driving Mia and the elves to attempt a daring rescue.

Jealous of Mia's ability to jump to Centopia, Vincent wants to give it a go himself. Though Mia reluctantly lets him try, she ends up transported there instead. And it's a good thing, because someone needs to stop the unicorns from visiting the Blossom Tree for their annual feast - they'd be too exposed to danger. When the stubborn unicorns refuse to listen, the elves must enlist the help of the reclusive but awesomely powerful Earth Unicorn.