In the small town of Hawkins, Indiana, in November 1983, a young boy named Will Byers is riding his bike home from a Dungeons & Dragons game with his friends Mike Wheeler, Lucas Sinclair, and Dustin Henderson. As he rides through the dark, he notices a strange figure in the woods. Suddenly, he is chased by a mysterious creature and disappears without a trace. His mother, Joyce Byers, becomes frantic when he doesn't return home, and the town begins to search for him.

The next day, Will's friends, Mike, Lucas, and Dustin, decide to search for him. They come across a girl with a shaved head and strange powers, who they name Eleven. She has escaped from a nearby government lab, the Hawkins National Laboratory, where she was subjected to experiments. Eleven has telekinetic abilities and can communicate with Will through her powers. She reveals that Will is in a parallel dimension known as the Upside Down.

Joyce, desperate to find her son, begins to experience strange occurrences in her home, including lights flickering and strange messages appearing. She believes Will is trying to communicate with her. Meanwhile, Chief Jim Hopper, the town's police chief, begins his own investigation into Will's disappearance, uncovering the lab's secret experiments and the existence of the Upside Down.

As the boys continue to bond with Eleven, they learn more about her past and the experiments conducted on her. They also discover that she has a connection to the creature that took Will, known as the Demogorgon. The boys and Eleven devise a plan to confront the creature and find Will. They set up a trap using a makeshift sensory device to lure the Demogorgon.

Joyce, with the help of Hopper, discovers a secret entrance to the Upside Down in the lab. They enter the dimension, where they encounter terrifying creatures and the eerie environment that mirrors their own world. Joyce finds Will in a cocoon-like state, and she manages to pull him out, but they are pursued by the Demogorgon. Hopper fights off the creature, allowing Joyce and Will to escape.

Back in Hawkins, the boys and Eleven face off against the Demogorgon in a climactic battle. They use their Dungeons & Dragons knowledge to strategize against the creature. Eleven, using her powers, confronts the Demogorgon, ultimately sacrificing herself to defeat it. The boys are devastated by her loss but manage to escape.

In the aftermath, Will returns home, but he is not the same. He experiences flashbacks and visions of the Upside Down, indicating that he is still connected to it. Joyce is relieved to have her son back, but she is also worried about his mental state. Hopper, now aware of the ongoing threat from the Upside Down, begins to investigate further.

The season concludes with a sense of unease as the characters grapple with the events that transpired. Eleven is presumed dead, but a final scene reveals that she is alive and being held in a secret location, hinting at further dangers to come. The town of Hawkins remains forever changed by the events of the past few weeks, setting the stage for future conflicts.

At the end of the first season of "Stranger Things," the main characters confront the Demogorgon, and Eleven sacrifices herself to save her friends. The season concludes with a sense of hope as the kids return to their normal lives, but the mystery of Eleven's fate lingers.

As the final episode unfolds, the tension escalates in Hawkins, Indiana. The group of friends--Mike, Dustin, Lucas, and Will--are determined to rescue their friend Will Byers, who has been trapped in the Upside Down, a dark parallel dimension. They devise a plan to confront the Demogorgon, the monstrous creature that has been terrorizing their town.

In the Hawkins laboratory, Dr. Brenner and his team are frantically trying to contain the situation. They are aware that the creature is linked to Eleven, a girl with psychokinetic abilities who has been living in the lab. Eleven, having formed a close bond with Mike, decides to help her friends. She uses her powers to locate Will in the Upside Down, revealing his location to the boys.

The group, armed with makeshift weapons, enters the Upside Down through a portal created by the lab. The atmosphere is dark and eerie, filled with the sounds of the Demogorgon lurking nearby. They navigate through the twisted landscape, searching for Will. Meanwhile, Eleven confronts her own fears and the trauma of her past, channeling her strength to face the creature.

As they find Will, he is unconscious and trapped in a cocoon-like structure. The boys manage to free him, but the Demogorgon appears, furious and ready to attack. A fierce battle ensues. The boys fight bravely, but it is Eleven who ultimately confronts the Demogorgon. In a climactic moment, she uses her powers to lift the creature and hurl it against the wall, causing it to disintegrate. However, this act takes a toll on her, and she disappears in a burst of energy, leaving her fate uncertain.

In the aftermath, the boys and Will return to the real world, relieved but shaken. They reunite with their families, and the sense of normalcy begins to return. Will, however, is haunted by visions of the Upside Down, indicating that the threat may not be entirely over.

The final scenes show the boys at school, trying to adjust to life after their harrowing experience. They share a moment of camaraderie, solidifying their friendship. Meanwhile, Joyce Byers, Will's mother, is seen embracing her son, grateful for his return.

The season closes with a haunting image of Eleven, who is revealed to be alive but in hiding, as a shadowy figure looms over her. This leaves viewers with a lingering sense of mystery and anticipation for what lies ahead.

In summary, the fates of the main characters are as follows: - Mike, Dustin, and Lucas emerge as heroes, having faced their fears and fought for their friend. - Will is rescued but remains affected by his experience in the Upside Down. - Eleven sacrifices herself, leaving her fate ambiguous, hinting at her potential return in future events. - Joyce is reunited with Will, showcasing the strength of a mother's love amidst chaos.

The season ends on a note of hope intertwined with uncertainty, setting the stage for future adventures in Hawkins.

In the first season of "Stranger Things," there is no post-credit scene. The final episode concludes with a tense and emotional resolution to the season's main plotlines. The last scene features Eleven, who has been a central character throughout the season, using her powers to defeat the Demogorgon. After the climactic battle, the story shifts to a more serene moment where the boys are seen enjoying a game of Dungeons & Dragons, signifying a return to normalcy.

The final moments of the season show Mike, Lucas, and Dustin celebrating their victory, while Eleven is shown in a mysterious location, hinting at her survival and the potential for future adventures. The screen then fades to black, and the credits roll without any additional scenes following them.

Will Byers goes missing in the first season, and it is revealed that he is trapped in the Upside Down, a parallel dimension. He experiences terrifying encounters with the Demogorgon and struggles to communicate with his friends and family while trying to survive.

Eleven is a young girl with psychokinetic abilities, who escapes from a government laboratory where she was subjected to experiments. She can move objects with her mind, create force fields, and has a strong connection to the Upside Down.

The Demogorgon is a monstrous creature from the Upside Down that serves as the primary antagonist in the first season. It is responsible for Will's abduction and poses a significant threat to the characters as they try to rescue him.

Jim Hopper starts as a disillusioned police chief in Hawkins, Indiana, who is initially skeptical about the supernatural events. As the series progresses, he becomes a protector of the children, particularly Eleven, and takes on a more heroic role as he confronts the dangers of the Upside Down.

The Mind Flayer is introduced in the second season as a powerful entity from the Upside Down that seeks to control and manipulate others. It uses Will as a host to enact its plans, leading to a larger conflict that affects the entire town of Hawkins.

In "Stranger Things," there are several scenes and elements that may be considered potentially objectionable or upsetting for children or sensitive viewers. Here are some aspects to be aware of:

1. Supernatural Horror Elements: The show features various supernatural creatures, including the Demogorgon and the Mind Flayer, which can be frightening and intense.

2. Violence: There are scenes of physical confrontations, including characters being attacked by creatures, as well as some instances of blood and injury.

3. Paranormal Themes: The series explores themes of government experimentation and the existence of alternate dimensions, which may be unsettling for younger viewers.

4. Emotional Distress: Characters experience significant emotional turmoil, including loss, fear, and trauma, which may be distressing.

5. Language: There are instances of mild profanity and some suggestive language throughout the series.

6. Mature Themes: The show touches on themes of friendship, loyalty, and the struggles of adolescence, but also includes darker elements such as bullying and the impact of trauma.

7. Scary Atmosphere: The overall tone of the show is suspenseful and can create a sense of dread, particularly in scenes set in the Upside Down or during confrontations with monsters.

These elements contribute to the show's thrilling and suspenseful nature, but they may not be suitable for all viewers, especially younger children or those sensitive to horror and intense situations.