In 1944, during World War II, an American pilot Hank Marlowe and a Japanese pilot, Ikura Junpei, parachuted together to an island in the South Pacific after an air battle. When Junping chased Hank to the edge of the cliff, he tried to kill him, but a giant orangutan called "King Kong" suddenly appeared, leaving the two dumbfounded. With the end of World War II, in 1973, after the United States launched an artificial satellite, it accidentally discovered the island in the South Pacific region, calling this secret place "Skull Island." After Bill Rhonda, a senior executive of the "Project Monarch" investigating ancient giant creatures, was authorized by the government to explore this island that no one had ever set foot in, he came to Da Nang, Vietnam to hire former British Special Air Service Captain James Conry as The tracker and the army led by US Lieutenant Colonel Preston Packard served as escorts, and their team had just prepared to withdraw their troops from the Vietnam War and return home. The expedition included Mason Weaver, a pacifist female field journalist. She believed that the expedition was some sort of classified military operation and came to investigate voluntarily.
The expedition left by boat from Bangkok, Thailand, and arrived at Skull Island after several days of crossing the sea, but also found that the island was surrounded by a huge storm. Under the escort of Packard's helicopter squadron "Sky Devils", the crowd travelled through the storm to Skull Island and moved in groups on the island. One group is responsible for surrounding and observing the surrounding environment; while the other group drops bombs so that scientists can observe the changes in the earth's crust and know that the ground is "hollow." However, the successive bomb explosions alarmed King Kong on the island, causing it to attack the army in order to protect the territory. After the weapons were ineffective against King Kong, all helicopters were shot down by King Kong like flying flies. After witnessing that most of his subordinates died in the hands of King Kong, Packard met with the surviving subordinates who had crashed nearby and vowed to destroy King Kong to avenge his men.
When Kang Rui led the survivors including Weaver and Rhonda's two colleagues Buros and Sun Lin to the ruins deep in the forest, he met the indigenous Iwe and the elderly Hank Marlow. Marlow took them to the indigenous villages on the banks of the river, explaining that King Kong was sealed as the god and guardian of Skull Island, and its mission is to protect the island from other large carnivores, especially hiding in the hollow of the island for many years. The monster group "Skullcrawlers" (Skullcrawlers). In order to rush to the evacuation helicopter that will be coming three days later, Kang Rui and his team began to rush to work on the ship that Marlow had put together with the wreckage of the fighter plane. When the ship was completed, Marlowe went to the tomb of the dead Junping to say goodbye, and then bid farewell to the natives and embarked on a departure journey. On the way across the river, satellite expert Victor Neves was torn apart by a group of flying beasts. The others managed to meet Packard in the forest, but Packard insisted to rescue the soldiers trapped on the other side. Jack Chapman. At the same time, Chapman, who was alone in the forest, was eaten by a lurking skeleton creeper while he was traveling.
Everyone walked to the natural gas zone where a large pile of bones were piled up. The bones included King Kong's dead parents. A skeletal creeper just attacked the territory. On the way, Chapman's skull was spit out and Rhonda was eaten and several soldiers were killed. Weaver passed a lighter Ignite the natural gas to kill it. Packard, who learned of Chapman's death, began to lose his mind and insisted on taking his remaining team to kill King Kong; the two teams parted ways. Packard and others found the diary and military cards left by Chapman, and obtained a large amount of explosives from his helicopter, and began to set up traps to kill King Kong. When Kang Rui and Weaver came to the cliff to investigate, they happened to meet King Kong and found that it was actually not hostile to humans. Packard ignited the flames of war in the distance to declare war on it, waiting for King Kong to burn the gas when he ran into the lake, and was ready to press the explosive detonator to destroy it in one fell swoop. Driven by sympathy, Kang Rui and Weaver returned to stop them. The remaining soldiers decided to defy Packard after being persuaded by them. However, the largest skeleton crawler was attracted by the explosion and crawled out of the lake. Packard, who went his own way, was caught. The sober King Kong punched to death.
Everyone ran directly in the direction of the ship, but the skeleton crawler quickly caught up with Kang Rui's group. The soldier Cole detonated the grenade alone and intended to die with it. King Kong was accidentally trapped in the shipwreck when he rushed to the battle with the skeleton creeper. Bulos and Sun Lin sailed back to fight with others, while Weaver stood on the top of the mountain and fired a flare to interfere with the skeleton creeper. After King Kong got out of his body, he pulled out the tongue of the Skeleton Crawler with its inner capsule and completely killed it. Weaver also fell into a coma in the lake, and was finally rescued by Kang Rui after being pulled ashore by King Kong. After the war, everyone set sail and left the territory of Skull Island. Under King Kong's gaze, they were rescued by a group of oncoming rescue helicopters.