SYNOPSIS:
The Kinship is an alien species that can take over any living person and exert complete control over every action. Another species had sought to take over The Kinship's world, during an event known as "The Great Destruction". To survive, The Kinship abandoned their own world, hoping to live on another life-supporting planet. They place an egg inside a meteor to transport themselves across the galaxy, hoping the meteor would crash on another inhabited planet. Once there, the egg would infect the first life form that touches it.
In 1988, the Kinship's meteor crashes in Chester's Mill. Teenagers Melanie, Pauline, Sam and Lyle find the meteor in the middle of the woods. As they approach it, four glowing hand prints appear, one on each side of the meteor. When the four place their hands on the meteor, it opens, revealing a glowing pink egg. Attracted by the egg, Melanie picks it up. However, Lyle pushes her into the meteor, killing her and stopping the Kinship's infection process. Melanie's friends bury her and the alien egg, swearing never to talk about the incident again.
In 2013, two archaeologists, Christine and Eva, search for an intact egg, which they believe to be located in Chester's Mill. They work for a large energy company called "Aktaion", which has studied other eggs that crashed on Earth. All of the other eggs they had studied were damaged by their impact.
Christine and Eva find the intact egg. As Christine holds it, the infection process begins. A large pink explosion occurs, and a dome lowers around them, with a mini-dome descending over the egg. Christine and Eva are sucked into a large cave and cocooned.
Over the next six weeks, many events happen within the dome. Joe and Norrie find the mini-dome and the egg within it. The Kinship chooses Joe, Norrie, James, and Angie to be "the four hands," people who protect the dome, the mini dome, and the egg, and interact with them. Pink stars, a visible energy source, appear many times throughout the life of the dome, most noticeably on the egg.
Seasons 1 and 2 focus on the people inside the dome and on the nature of the mysterious dome itself. Season 3 provides answers to these mysteries.
In season 3, Christine resurrects Melanie, whom Christine uses to lure the townspeople into the caves so they can be cocooned and The Kinship can infect them. Halfway through the transfer process, Big Jim breaks the egg, preventing a full infection. Over time, the townspeople become absorbed by The Kinship, except for a few who fight the aliens and try to escape. These remnants of the townspeople are known as The Resistance: Julia, Big Jim, Joe, Norrie, Hunter, Barbie, and Lily, an employee of Aktaion.
After a while, the dome begins to deteriorate because the egg is being destroyed. As a result, The Kinship and The Resistance must work together to escape; otherwise, the dome will turn to stone, and everyone will suffocate and die. They eventually bring down the dome. However, The Resistance plans to capture and kill The Kinship. Once the dome comes down, the government enters Chester's Mill and imprisons everyone, letting the non-infected people (The Resistance) remain free.
All is well until a year later when The Resistance discover The Kinship's leader, Dawn, is still alive, posing as a schoolteacher and traveling with children to find another egg and bring down a new dome. She finds an intact egg and says, "We'll come back another time."
