As the familiar Johnny Test style tune plays, the scene opens up to the famous Test family. Nevertheless, something seems different this time around. Rather than the normal goofy experiments and experiences, your home is eerily peaceful. Unexpectedly, a loud moan breaks the silence as the cam pans to the backyard. There, we see Mary and Susan, the twin siblings who are normally understood for their intelligence and innocence, being damaged by a gigantic robot with tentacles.