The nearby Hawkins National Laboratory ostensibly performs scientific research for the United States Department of Energy, but secretly does experiments into the paranormal and supernatural, including those that involve human test subjects. Inadvertently, they have created a portal to an alternate dimension, "the Upside Down". The influence of the Upside Down starts to affect the unknowing residents of Hawkins in calamitous ways.
When Will Byers is abducted by a creature from the Upside Down. His mother, Joyce, and the town's police chief, Jim Hopper, search for Will. At the same time, a young psychokinetic girl called Eleven escapes from the laboratory and assists Will's friends, Mike, Dustin, and Lucas, in their own efforts to find Will.
Season 4 of The Virus Within
Trinity is familiar with zombies, being one herself, but when strange zombies start appearing, she realizes that the world she knew might be changing yet again.
When a dangerous set of scientific notes are discovered, Trinity and her friends don't realize anything is wrong until a frantic radio call comes in. Unaware of the notes, they race to the south and struggle to determine where the strange zombies came from. The zombies are unlike any ranks previously seen, and they aren't as predictable. Some have new tricks hidden up sleeves, forcing any Stronghold they encounter to quickly adapt to the new challenge or risk being overrun. Secrets never remain hidden, and zombie apocalypses never make life easy.