Ash decides to cooperate with Xiao in order to thwart Luther's ambitions. After Ash is shown remnants of Luther's experiments, Xiao tells him about Luther's goals and explains how Xion is the key.
There's nothing we can do to stop
Theodor falling into his hands.
Dass Theodor in Luthers
Fänge gerät,
On ne peut empêcher Theodore
de rejoindre Luther.