The children realize that their latest fight is no where on Earth, at least, not the one they know. The awful truth behind the game comes out.
You say "lost," but what does 
that mean in practical terms?
ما الذي تقصده بالخسارة عمليا؟
Was genau meinst du mit
„unsere Erde wird verschwinden”?
Tu dis qu’elle disparaîtra,
mais de quelle façon ?