Poltergeist: The Legacy (1996) : 1x1

We begin in 1969 with Winston and Derek Rayne driving in their car, in the rain. They end up at a cave. Winston goes in, while Derek is told to remain in the car. Inside the cave, Winston finds a sepulcher (a wooden box). He opens the sepulcher, and a demon skeleton emerges, which tries to drag Winston back in sepulcher, however, Derek runs in and manages to close the box. The demon is trapped back inside. However, Winston dies, but before he does, he gives Derek his Legacy ring. Now in the present day, we arrive at the Luna foundation, an artifact finding organization. Derek owns the Luna Foundation, along with Nick, Alex, and Julia, who also live in the house. As a new artifact is presented to Derek, he gets a vision of a young girl in a graveyard with a wooden box, which looks like the one that Winston opened. Derek assembles Nick, Alex, and Julia in a control room, in which to get to, you must walk through an invisible wall.