Before Characters' Introduction

"It was the beginning of the story..."
"The madness has yet to begin.."
The story began when a girl named Abigail Eve moved to a new mansion with her parents. She invited her friends for a sleepover.
Then one night, crazy things began to happen in the mansion. A spirit named Emilia, wanted three sacrifice to complete her so-called-Ritual.
But at the end, only one of them was able to get out alive. All of her friends are nowhere to be seen. The police only found Abigail's parents corpse after the mansion collapsed.

Will the rest come back alive?
Or will they stuck in there as a sacrifice and will never see their family and friends again.