From publisher blurb:
“Don’t worry, it’s just a bad dream!”
Sometimes that’s true. But when your planet happens to be in close proximity to the Astral Plane, your nightmares could be something else.
It’s common knowledge that sleeping creatures can experience loosely-remembered journeys into the Astral Plane. So if your drifting spirit encounters a hungry night terror, you’re likely to wake up in a horrible sweat as it rips into your astral form. Thankfully, short of causing you to fall out of bed in a panic, there’s little harm a night terror can inflict on dreamers.
The problem comes when direct portals to the Astral Plane - which spellcasters have been creating with great efficiency - causes night terrors to leak into the Material Plane. Now they can directly feed on dreamers, disrupting their rest and consuming psychic energy. While unlikely to kill an adventurer on their own, they can still make life incredibly difficult for a party travelling through dungeons without any rest.
But don’t worry, it’s just bad dreams.