El Capitán Calzoncillos y la turbulenta aventura de don Tufote

Jorge and Berto, hand in hand with their doubles from the past, have discovered something that smells worse than a bunch of rotten socks. Their gym teacher, Mr. Magrazas, has created Tonto-o-Niño 2000, a smelly mind control spray that transforms kids, making them attentive, obedient and perfect. Will Jorge and Berto, along with Captain Underpants, be able to put an end to this smelly criminal? And, more importantly, will this be the end of the unshrinkable cotton hero?