After the tragic death of their father in a car accident, Emily, Navin and their Mother move into the house of their grandfather, Silas Charnon, who disappeared after the death of his wife. This scene shows their arrival at the Charnon House.
Stay down, Navin.
While exploring the house, Emily and Navin come across his library. After exploring for a bit, Emily sees a hand-shaped indent under a book on the desk. She puts her hand in it and it flips over, revealing an amulet. She has Navin tie it on. This shows when Emily found the amulet.
That night, while the power is still out, Emily hears a warning in the middle of the night seemingly coming from the amulet. A few seconds later, a thumping noise comes from the basement. Emily's mom goes to investigate and Emily and Navin follow. There is a scream from mom and when Emily and Navin go to see, she is gone. They go through a mysterious door and down a staircase and they are trapped in a new world.
They fall out of the staircase room and on to a gravelly surface. There is a monster there- an 8 armed sort of ball with legs. Out of one of the holes in it's side, Emily's mom can be seen warning the kids to stay away. They hide behind a rock to stay away and the creature nearly finds them. Then a mysterious noise that causes the creature to turn away. Then, they run down a slope and see a person behind them, an elf, and a boat rowing towards the shore. They run towards the boat.
After stunning the elf with a stun gun, the person in the boat beckons them into the boat. They nervously follow and the person rows unnaturally fast towards a house on an island in the middle of a lake. When they enter, the 'person' reveals himself as a robot rabbit named Miskit. He leads them up the stairs to show them their missing Grandfather, Silas Charnon! He is dying so he tells Emily in his last moments about the power of the amulet she has found. After his death, the robots help Emily and Navin retrieve their mom.
As they track down the Arachnid to a hill, the elf appears. He frees Emily's mom, and then tries to convince her to join him, but she refuses. He tries to capture her brain to force her to with a creature that can control you, but Emily found the power of the Amulet in time to stop it. Then, she hurts the elf and says to stay away from her family forever.