Otto, as the professor of bugology in a co-educational institution of the middle west, finds himself confronted with the necessity for catching a upa diadi Coedius, or 'kissing butterfly,' a very rare specimen, in order to complete the collection of the college. While chasing the upa diadi over the hills. Professor Otto is stalked by a bevy of co-eds who make a bet that all he knows of kissing is the 'kissing butterfly,' one particularly bold young person offering to bet that she will make the professor kiss her before 10 P.M. While at first indifferent to the lure spread for him, the bug chaser eventually becomes interested, is smuggled by the co-eds into their dormitory, discovered there by the president and involved in all sorts of trouble before matters are satisfactorily explained and the 'kissing butterfly' captured.