Percy announces he's giving up his Ghost Scaring Machine - he's too old for it now. It soon becomes clear that the machine is good for more than just scaring ghosts.
おばけ退治マシーンをウィフのリサイクル工場へ運ぶことになったパーシーとトーマス。だが、途中でさまざまなトラブルが起こり、そのたびにマシーンのさまざまな機能が役に立つ。
