In outer space, a supernova explodes and its particles engulf a desert home on Earth. While driving to Los Angeles International Airport, Grant and his son-in-law Richard listen to a radio report about a supernova traveling to Earth after breaking into pieces millions of years ago. Grant surprises his family with a new solar-powered desert home he has designed. Soon, he presents a new horse to his son Steve and a pony to his granddaughter Jenny. Jenny unties the pony’s leash in the corral and it runs off. When she chases it, she sees a green glowing triangular-shaped unidentified object. She gives the object a hug and asks it to find her pony. The pony suddenly appears and she leads it back to the corral. When Grant and his wife, Ana, take their luggage into the house, they discover that the living room has been ransacked, but no other rooms have been disturbed. Jenny asks her grandfather about the glowing object she saw by the barn, but he tells her the only thing there is the corral. When she takes her grandparents, her mom Beth, and her uncle Steve to the corral to show them the glowing green object, it has disappeared. After the family goes back to the house, Jenny sticks a tiny green glowing UFO fragment in her pocket. When she walks into the bathroom, a strange green glow remains with her whether or not she turns the light switch on or off, and the faucet turns on by itself. At dinner, Jenny tells Grant his house is the only one she has ever seen that works by itself. Grant and Ana enjoy an after-dinner walk in the desert when a UFO in the sky startles them. They return to the house and Ana notices that a cracked mirror has been repaired. During the night, green gas appears at the foot of Jenny’s bedroom door and a tiny alien appears. The creature flies to the bedpost and Jenny asks if it wants to play. She then looks out the window and sees a UFO that suddenly appears in her bedroom, so she hides in her closet. Ana awakens and sees the green alien. Grant grabs his gun to search the house and discovers Jenny is missing. When the family searches the living room, the house shakes as if an earthquake is occuring. The family sees blue lights dance across the sky and break off into circular objects that disappear into the night. Jenny appears and tells the adults she was playing with her friend in the corral. Grant searches the barn and sees lights flickering on and off. Meanwhile, at work, Richard can’t reach the family by phone. As the family prepares to leave the desert, they see the family car is running but no one is in the driver’s seat. Grant and Steve check the engine until a series of blue lights circle the house. The family rushes back inside and the phone rings. When Grant hears Richard’s voice, he asks for help. Richard only hears static and decides to drive to the desert. When Steve goes out to the car, he comes face to face with a UFO. The object enters the house and Jenny recognizes it as “the bad thing” she has already seen. As the family takes cover in one of the upstairs bedrooms, Grant shoots the UFO. Unharmed, it follows the family upstairs. The UFO begins to burn a hole through the bedroom door, but the attack abruptly stops. Next, Steve goes downstairs to retrieve Jenny’s missing doll. When he looks out the window, he sees strange light formations in the sky. When Grant follows Steve outside, he confronts two dinosaurs fighting with each other. Father and son hide in the barn. Richard stops at a gas station that has lost power and has to hand-pump gasoline into his car. Grant hears Ana scream when she opens the front door and sees one of the dinosaurs. A dinosaur crashes through the barn door and Grant attacks it with a pitchfork. He and Steve release one of the horses and another dinosaur chases after it until a UFO swallows up the dinosaur. Meanwhile, two UFOs force Richard’s car off the road. When the car crashes, he walks the rest of the way to the house. The family huddles inside the house while an electrical storm rages on. When it stops, several UFOs, decayed military trucks, and antique fighter planes surround the house while bands of swirling light envelop Jenny, who is outside. Fierce winds prevent Grant and Beth from rescuing Jenny. Richard finds the family’s horse wandering in the desert and rides bareback to the house. Grant and Ana return to the barn and tell Steve that a vortex has swallowed up Beth and Jenny. It is suddenly daylight and Grant tells Steve that “a time space warp” is responsible for all the strange occurrences and creatures. As Grant, Ana, and Steve ride away on their horses, a cloud of swirling lights surrounds the house. Richard arrives at the family house and observes the swirling lights. In the desert, a giant yellow orb appears in the sky and Beth is transported back to Earth. When her parents ask about Jenny, Beth responds that Jenny is with Richard. She adds that everything is fine and the family is going to be safe. Beth’s understanding is that the aliens are from a highly advanced civilization and they mean no harm. Jenny appears unharmed and so does Richard. The family peers over a ridge and sees a glass encased futuristic city in the middle of the desert. As they walk toward it, Grant tells his wife that they should embrace this new way of life.