The group of friends, consisting of five teenagers and a younger sibling, discover the large egg while out on a camping trip in the remote woods. They initially believe it to be a dinosaur egg and are thrilled by the possibility of this discovery. However, when the egg hatches, instead of a baby dinosaur, a sleek and deadly extraterrestrial creature emerges.
The creature, which the group comes to call the Alien, is highly intelligent and begins to pick off the teenagers one by one, using its stealth and otherworldly abilities to hunt them down. The group quickly realizes that they are facing a deadly threat and must work together to stop the Alien from reaching civilization.
They decide to fight back against the Alien, using their wits and whatever weapons they can find in the wilderness. They construct traps and devise a plan to lure the Alien away from their campsite and into a remote area where they can contain it. But the Alien proves to be a formidable opponent, constantly outsmarting the group and adapting to their tactics.
As the group's numbers dwindle, they know they must act fast before the Alien reaches civilization and causes catastrophic damage. In a daring last stand, they confront the Alien head-on, risking their lives to save humanity from this otherworldly predator. Ultimately, it is the youngest member of the group who comes up with the final strategy that allows them to defeat the Alien and save the world from certain doom.