Something from the Upside Down must’ve survived in the teaser trailer for “Stranger Things: Tales from ’85.”

Set between the events of “Stranger Things” Seasons 2 and 3, the animated spinoff will premiere April 23 on Netflix.

In the winter of 1985, snow blankets the town and the horrors of the Upside Down are finally fading. Eleven, Mike, Will, Dustin, Lucas, and Max have settled back into a normal life of D&D, snowball fights, and quiet days.

But beneath the ice, something terrifying has awakened. Could it be from the Upside Down?...