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.