Bill Bixby (My Favorite Martian)
Lou Ferrigno (The Scorpion King 4)
Elizabeth Gracen (Highlander: The Raven)
Philip Sterling (Another World)
Barbara Tarbuck (Walking Tall)
Anna Katarina (Batman Returns)
John Novak (Wishmaster 3 & 4)
Andreas Katsulas (Babylon 5)
Chilton Crane (Final Destination 2)
David Banner masquerades as David Bellamy, a mentally challenged janitor, to gain access to a scientific research facility in Portland, Oregon. He believes that the studies of one of the scientists there, Dr. Ronald Pratt (Philip Sterling), may hold the key to curing his gamma-induced condition that, in times of stress, turns him into a superhuman green creature known as the Hulk. Pratt takes a liking to the man he sees only as a building custodian.Image result for the death of the incredible hulkOne night after making a transaction at the bank, David is trapped by street thieves and is beaten and robbed. The stress of his injuries induces another transformation. The Hulk makes short work of the criminals but attracts the attention of authorities before escaping.The next day, bypassing security, Banner enters Pratt’s laboratory and examines the formula on his blackboard, making corrections and filling in gaps. At the same time, a beautiful Russian spy named Jasmin (Elizabeth Gracen), thinking she has completed her last act of espionage, is approached again by former superior Kasha for one last job: infiltrate Pratt’s lab and steal the files on his experiments. When she refuses, Kasha blackmails Jasmin with her sister Bella’s life. Jasmin then disguises herself as a club hopper and gets a fingerprint from one of the security guards.Image result for the death of the incredible hulkThe following morning, Pratt examines the formula on his blackboard and discovers that it is now correct. Determined to find out who is guiding him, he hides out in the lab in wait for his would-be mentor. This time he catches David in the act and asks him to tell him something that would keep him from sounding the security alarm.
Banner reveals his true identity and goes over the events that led to his self-experimentation that resulted in the Hulk. He notes that his condition also dives into Pratt’s own research on a human’s capacity to heal, for in Hulk-form David’s accelerated metabolism allows any wound to close in seconds, leaving him with hardly a scar. Pratt believes he can cure David, but he needs to first study the creature. Over the course of a week, both scientists, with the help of Pratt’s scientist wife, Amy (Barbara Tarbuck), construct a force field cage and sensors to track Banner’s vitals. On the night of the observation, David is rigged with a tranquilizer to sedate him once the readings have been recorded. Banner shocks himself with an electrical rod and Hulks-out. The energy cage holds the creature back until Pratt has his readings and Amy activates the tranquilizer. Banner reverts to normal and Pratt and Amy photograph the closing puncture wound from the tranquilizer. Banner later watches the video of his transformation – claiming it is the first time he has seen the Hulk – and fails to see any humanity in him despite Amy’s beliefs.The next day, the facility’s board announces to Pratt that they are pulling his funding for his lack of results, which forces him to move up his proposed cure for David. An eastern European spy network dedicated to using Pratt’s (and Banner’s) work for corrupt purposes breaks into the lab, halting the experiment and kidnapping Pratt and Amy. Banner has fallen in love with Jasmin, who returns his affections, and with her help, he helps the Pratts. While pursuing the kidnappers, Banner and Jasmin learn that her sister, Bella (Anna Katarina), is the true leader of the spy network, and Banner turns into the Hulk, who tries to protect Pratt and Jasmin. The Hulk runs towards the plane, on which Bella and Zed are attempting to escape, and breaks it open. He climbs aboard before it can take off, enters and stops the two spies. But the plane explodes and the Hulk is thrown into the night, falling onto the concrete. After one last return transformation, Banner dies, telling Jasmin he is free.I think this was a good final chapter to the Original Hulk. To answer your questions about how this fall from that airplane could kill the Hulk, the answer is simple. He was in the process of changing back to Dr. Banner, so by the time he hit the ground, the good doctor took the full force.