In Technopolis, Dr X presents his new invention: a teleporter. But the demonstration comes to a sudden end when the lower half of Dr X's body is teleported, while the upper half of his body¿remains in Technopolis! The Super 4 have to find the doctor's legs and rejoin the two pieces before they are damaged, because the slightest bobo will modify the body's molecular structure and prevent the two parts from recognizing each other and joining. But this isn't an easy task because the doctor's legs might have landed in very dangerous place¿but where?