At the Jellyfish Festival on Ragna, Messer says goodbye, as he reveals that he has been reassigned as a training instructor due to his worsening condition. Meanwhile, the Windermearans have developed a new system to amplify Prince Heinz' wind song. The Aerial Knights launch a surprise attack and Var Outbreak on Al-Shahal to test the new system. The Delta team must protect Al-Shahal from the Knights' attack even though they are one man short... (thetvdb.com)