After beating Drago to the Immortal flute containing the Sky Demon Chi in Australia, the Chans return to Section 13. Before Uncle can transfer the chi from his Chi-O-Matic to the vault's containment jar, however, Jade decides to take it with her on a school field trip to Windsor Mansion. When the device is confiscated by Jade's teacher, Miss Hartman, she inadvertently absorbs the Demon Chi and takes on the form of a Sky Demon.