Because of the risen sophistication in audiences' tastes since the original film, Semple sought to maintain a realistic tone, but infuse the script with a sly, ironic sense of humor that the audiences could laugh at. Having settled on the mood, Semple retained the basic plotline and set pieces from the original film, but updated and reworked other elements of the story. Inspired by the then-ongoing energy crisis and a suggestion from his friend Jerry Brick, Semple changed the expedition to being mounted by Petrox Corporation, a giant petroleum conglomerate whom suspected that Kong's island has unrefined oil reserves. In its original story outline, Petrox would discover Kong's island from a map hidden in the secret archives at the Vatican Library.