Destiny takes an unpredicatable turn when Mix Juice, the unknown girl group, teams up with Dr. Susomo Tsukumo, a genius scientist, to become the first band on the moon.

女の子とお金が大好きな落ちこぼれ犬神使いの川平啓太と、彼と契約を交わした破壊好きで嫉妬深い犬神のようこが繰り広げるドタバタ騒動を描いた人気ライトノベルをアニメ映画化。2007年、変態処罰法が施行されたことにより、啓太たちが暮らす吉日市は防護服を着た謎の部隊に包囲されてしまった。変態の疑いをかけられた者が次々と連行されていく中、啓太とようこも“A級変態”として追われるハメになり……。

In a mythical kingdom, the mighty Imperial Knights harness a magical substance known as Aer to power their weapons and protect humanity from the monsters of the forest. But something strange is afoot; the Aer is somehow changing, causing the wilderness to waste away and stirring the woodland beasts to attack with greater frequency. As danger creeps steadily closer to civilization, two young recruits - Flynn, the rigid son of a fallen hero, and the rebellious and brash Yuri - must ride with their fellow Imperial Knights to distant ruins in hopes of uncovering the truth behind the transforming Aer.