Plot
1933- Carl Denham assembles a cast and crew to explore a mysterious island a myriad of miles from America. They find a prehistoric land covered with native people, dinosaurs, and a giant ape (50 ft. standing, 25 ft. hunched). After a nightmare experience, Denham and the remaining crew capture the ape to exploit for money. The ape runs amok through the city and is finally shot down. Kong falls from the top of the Empire State Building. Denham is sued by the city. The FBI creates a new secret branch known as "Monarch." The organization helps Denham escape the lawsuits as long as he leads them back to the island which Carl has now deemed, "Skull Island." Monarch discovers that on the opposite side of the island, far from the natives wall, there are several more giant apes, including a smaller albino ape. The organization leaves the island peacefully. They plan to monitor, track, and guard the island. This can be shown during the beginning credits in black and white footage/ black and white pictures with some old Denham narration. The narration can also include the famous line, "Oh, no, it wasn't the airplanes. It was Beauty that killed the beast!"
1965- After years of war and distraction, the island was kind of forgotten about. One of the biggest distractions is the mysterious creature that surfaced in 1954. Monarch spent all of their budget and man power tracking the creature with no luck. Finally during the first month of 1965, Monarch's Seismometers located around Skull Island begin reading large vibrations. The team investigates the cause. When they arrive on the island, the natives are still there with no problems. A large volcano on the opposite side of the island had exploded. Large radioactive tar pits form around parts of the island making it uninhabitable for humans. The team evacuates from the island and remains away for several years.
1971- The leaders of Monarch decide to send a brand new team in to observe the forgotten island. The team consists of soldiers and some members of the Monarch group. The team eventually runs into a giant ape (200 ft. standing, 100 ft. hunched). The group runs into other problems as well including giant bugs, a giant Spider (Kumonga), and a giant Allosaurus (Gorosaurus). They discover most of the indigenous species had died from radiation. Large bones of all different types of species are found scattered around the island. Most importantly, there are several ape skulls as well. After barely surviving the wrath of Kong, Monarch and the remaining soldiers head back to the United States. Monarch gets all of the information and concludes that the radiation from the tar pits and volcano caused two options: either exponential growth or extinction. They also concluded that the ape the team encountered is still a juvenile based on its traits and characteristics. They make a statement that this creature is not finished growing yet. The island also gets a new title, "Monster Island."
Post Credit Scene- Godzilla's dorsal spines poke out of the surface of the ocean as he swims passed the island.
Sorry for the long post, it was quick too. I will do a large re-edit and add lots of details.