GROSS! With the help of a jar of crystals and some creepy spiders, Sam Moore's wild clone-Stinky Stanley-learns to shoot gooey spider webbing from his fingertips! And he accidentally sticks himself to the wall of his own tree house. With Sam's help, Stanley escapes the wall and is soon catching bugs, swinging from branches, and lassoing the neighborhood pets for an animal parade. But then an evil scientist-Dr. Wermer-kidnaps Stanley to perform experiments...