Ella, Jason, and Brigit are back at the global magic school in the sky for their second year.

But not everyone is happy that Ella has returned, and when an illness begins affecting the students' marvels, she's in the spotlight once more. As tensions between Marvellers and Conjurors reach an all-time high, Ella and her friends are determined to unlock the secrets of the Arcanum Training Institute's past.

Why is the truth about the Conjure architect who founded the Arcanum Training Institute being kept hidden? To discover what mysteries their school holds, they'll need to track down the stolen memories . . .

'I want to live in this world' - Rick Riordan, author of the Percy Jackson series.