Wayne Szalinzki a wacky, absent-minded inventor, is back again but only this time he decides to use his infamous shrink machine just one more time. After when his wife Diane asks him to get rid of the "Tiki Man" a large tiki sculpture. Wayne refuses to get rid of it so he decides to restart the shrink ray and reduces the Tiki Man to pocket-size. However, after Wayne shrinks the Tiki Man the machine is accidentally activated and Wayne ends up shrinking himself and his brother Gordon! Meanwhile,...