The son of ill-fated scientist Dr Seth Brundle begins to grow at an accelerated rate and develop insect characteristics, planning to use his new-found abilities to take revenge on those who intend to exploit him. Sci-fi horror sequel, starring Eric Stoltz, Daphne Zuniga, Lee Richardson and John Getz.

Martin Brundle, born of the human/fly, is adopted by his father's place of employment (Bartok Inc.) while the employees simply wait for his mutant chromosomes to come out of their dormant state.