It's STRANGER THINGS. Story: At the start of time two worlds were born complete opposites from each other. One world made of flesh and blood seeking creatures and another made of GOOD and evil, but mostly EVIL. But when the telepathic child Eleven was forced to open the gateway to The Upside Down she connected to the one of blood seeking creatures to open the gateway between the two dimensions.
Thanks to trolley_mouse_1221 for the two demogorgans but the mind flayer I made myself
