The summary is:
A person named Rebecca works as a mortuary assistant and has to embalm two bodies on a stormy night. She finds out that her boss Raymond is involved in some occult rituals and that the bodies are possessed by a demonic entity. She tries to escape but is attacked by the corpses and dragged into a dark abyss. The video is a gameplay of a horror game called The Mortuary Assistant.
Here are the key facts extracted from the text:
1. The text is a transcript of a video game called The Mortuary Assistant, where the player works as an embalmer in a funeral home.
2. The player receives a call from their boss Raymond, who asks them to come in and take care of three new cadavers.
3. The player finds a key to Raymond's office and discovers a book with occult symbols and a note that says he can't let them live what he lives.
4. The player encounters supernatural phenomena, such as bodies moving, doors opening, and messages appearing on the walls.
5. The player tries to embalm a body named Annie, but she comes back to life and attacks them.
6. The player is possessed by a demonic entity that claims to have its prize.