Eddie Murphy stars as bashful Dr. Sherman Klump, a sort, colorful,'calorifically challenged' genetic professor. When amazing Carla Purty unites the university faculty, Sherman climbs desperate to whittle his 400-pound step down to size and acquire her heart. With one swig of his newfound fat-reducing serum, Sherman becomes'Love', a fast-talking,'' pumped-up, plumped down Don Juan.