In 1985, the town of Hawkins was in the hot summer, and the children were on summer vacation. During this summer vacation, the most important event in the town was the official opening of a new shopping mall, and the protagonists of this group of HawkinsThey have also begun to enter adolescence, and romantic feelings are also spreading and growing along with the strange atmosphere of hidden crises.

Unprecedented threats appear along with existing dark forces.Little Eleven and his friends know that the power of evil will never end, and she begins to evolve.They must unite to survive, because friendship can overcome fear.

After Hopper shoots several police officers and takes their uniforms, Murray completes his job with the assistance of Dustin and Erica, but when Hopper and Joyce arrive at the vault with the keys,Murray didn't have the correct Planck constant and they couldn't open it.But Dustin's girlfriend, Susie, told Planck's constant over the phone.

Billy captures Eleven and calls the monster to end her life.Nancy and her companions use Lucas' fireworks to throw at the monsters, while Eleven, who does not have superpowers, uses superpowers to remind Billy of the memories she saw of Billy's mother and who he really is——It worked.Billy protected Eleven from the monster and ultimately sacrificed himself.

Three months later, the Byers family was leaving Hawkins, and Eleven left with them.

《Stranger Things Season 3》 is a science fiction thriller TV series produced by Netflix in the United States, directed by Matt Duffy and Ross Duffy, and starring Millie Bobby Brown, Winona Ryder, DavidStarring Harper, Finn Wolfhard and others, the drama premiered on Netflix on July 4, 2019.​

The season tells the story of the town of Hawkins, which was threatened by the Mind Flayer in 1985, and Eleven and her friends united to fight against the Mind Flayer.