As graduation looms, Scott McCall, a werewolf and leader of his pack, and his friends face a supernatural threat: the Ghost Riders. These spectral beings erase people from existence, stealing their memories and lives. Scott's best friend, Stiles Stilinski, is among the first to be targeted and erased from everyone's memory except Lydia Martin, a banshee who can sense the supernatural. The core conflict revolves around Scott, Lydia, and Malia Tate, a werecoyote, trying to remember Stiles and find a way to bring him back before the Ghost Riders claim more victims.

The Ghost Riders are led by Mr. Douglas, who seeks to consume supernatural energy. The pack discovers that banshees are immune to the Ghost Riders' power, and Lydia becomes crucial in their fight. They learn that Stiles is trapped in a supernatural dimension and must find a way to open a rift to rescue him. During their efforts, Peter Hale sacrifices himself to save Malia, and Theo Raeken makes a sacrifice to protect Liam Dunbar. Ultimately, they succeed in bringing Stiles back, but the threat of the Ghost Riders and their leader, Douglas, is resolved.

However, a new danger emerges with the arrival of hunters led by Ms. Monroe, who is secretly advised by Gerard Argent. Monroe's goal is to eradicate all supernatural beings. The pack faces escalating attacks, including the poisoning and death of Brett Talbot. In a final confrontation, Scott blinds himself to defeat the Anuk-Ite, a creature of fear, with Stiles's help. The season concludes with Scott and his allies continuing their fight against Monroe, ready to protect the supernatural community.

Season 6 of Teen Wolf covers episodes 1-20. Here's everything that happened:

Season 6, Episode 1: Memory Lost - As graduation nears, Scott and his friends face a supernatural force. Stiles investigates a missing family and realizes they were taken by the Ghost Riders. Stiles is targeted and erased from everyone's memory except Lydia's. He tells Lydia to remember him before being taken by the Wild Hunt.

Season 6, Episode 2: Superposition - Scott, Lydia, and Malia sense a missing person, experiencing memory gaps. Corey's powers evolve, revealing he can see the Ghost Riders while invisible. They find a student I.D., helping them remember Jake Sullivan. Claudia Stilinski is revealed to be alive. Lydia writes "mischief," a clue to Stiles's first name. At the Sheriff's station, Stilinski embraces his wife, but the word "Stiles" forms. Lydia asks, "What the hell is a Stiles?".

Season 6, Episode 3: Sundowning - While Scott, Lydia, and Malia seek information about Stiles from Sheriff Stilinski's institutionalized father, Liam and the "B-team" try to protect Gwen from the Ghost Riders. A party at Scott's house fails to keep the Ghost Rider out, but Parrish deters it. Argent returns, investigating a soul-eating werewolf. The Sheriff remembers a key detail about Stiles.

Season 6, Episode 4: Relics - Scott and Liam try protecting the lacrosse team from the Ghost Riders, resulting in multiple players being erased. Lydia seeks relics of Stiles, finding Claudia's medical records showing inconsistencies. Argent is injured, and the episode ends with the reveal of Stiles' Jeep, offering a glimmer of hope.

Season 6, Episode 5: Radio Silence - Stiles, trapped in a ghostly train station, encounters Peter Hale. Back in Beacon Hills, Lydia, Scott, and Malia find Stiles's jeep, triggering fragmented memories. Stiles uses a radio to contact them, urging them to "find Canaan." Peter escapes the train station through the portal, but is severely burned and delivers Stiles's keys.

Season 6, Episode 6: Ghosted - Scott, Lydia, and Malia travel to Canaan, a ghost town, where they encounter a banshee named Lenore, who is haunted by her dead son. Liam and Hayden resurrect Theo to help them against the Ghost Riders. Melissa saves Argent from the Ghost Rider's supernatural toxins. The episode ends with the realization that banshees are immune to the Ghost Riders' erasure.

Season 6, Episode 7: Heartless - Scott and Liam, using Theo's reluctant help, trap a Ghost Rider, but Mr. Douglas kills it and consumes its pineal gland. Peter Hale returns, and Malia forces Melissa to heal him so he can help find Stiles. Sheriff Stilinski uncovers Stiles's boarded-up room, finally remembering his son. Corey is captured by Mr. Douglas at the episode's end.

Season 6, Episode 8: Blitzkrieg - Scott, Lydia, and Malia plan to enter the rift to rescue Stiles. Liam, Hayden, and Mason bargain with Theo to learn about Garrett Douglas. Sheriff Stilinski remembers Stiles, causing Claudia to fade away. Peter sacrifices himself so Malia can escape the Ghost Riders. Douglas uses Parrish to open the rift.

Season 6, Episode 9: Memory Found - Scott, Malia, and Lydia attempt to restore Stiles's memory using near-death experiences to open a rift. Liam and Theo distract the Ghost Riders, leading to Theo's sacrifice to protect Liam. Lydia remembers her kiss with Stiles, triggering a rift and a figure appearing. The episode concludes with Stiles (possibly) returning.

Season 6, Episode 10: Riders on the Storm - With Beacon Hills in peril, Scott's pack faces Douglas and the Ghost Riders in a final showdown. Stiles returns, reuniting with Lydia. Liam, Mason, and Hayden work to free Corey, while Malia connects with Peter. Scott diverts the Ghost Rider train, saving the town. Douglas is defeated, becoming one of the Hunt. The episode concludes with the group finishing high school and planning for the future.

Season 6, Episode 11: Said the Spider to the Fly - As Scott prepares to leave Beacon Hills, a Hellhound named Halwyn escapes Eichen House. Halwyn is then killed by the new guidance counselor, Ms. Monroe. Lydia experiences a vision, realizing they can't leave. Stiles, at the FBI, learns Derek is wanted for mass murder.

Season 6, Episode 12: Raw Talent - Scott and Malia investigate a unique bullet, fearing a new hunter. Lydia confronts her fears at Eichen House, saving Parrish from a doctor who was killing supernatural inmates. Theo, now homeless, is attacked. Brett Talbot is poisoned with wolfsbane by Monroe. Gerard Argent reappears, congratulating Monroe on her "raw talent".

Season 6, Episode 13: After Images - Scott's pack searches for Brett, who is targeted by Gerard and Monroe. Melissa and Argent investigate a strange, terrifying body with no DNA. Brett is hit by a car and dies, exposing Liam's werewolf form to the public. Gerard's plan to instill fear succeeds, as Liam's transformation is witnessed by a crowd.

Season 6, Episode 14: Face-to-Faceless - Liam faces animosity at school after his transformation is witnessed. Scott tries to negotiate peace with Monroe, but learns of her hatred stemming from a past encounter with the Beast. Liam discovers that Monroe is the new hunter. Parrish confronts and seemingly destroys the faceless creature. The episode concludes with the reveal that Gerard is advising Monroe.

Season 6, Episode 15: Pressure Test - Theo and two werewolves are captured and tortured, but Theo helps them escape, leading to their arrest. Scott tries to protect them, but the Sheriff refuses, causing Monroe to surround the station. Scott's dad brokers a deal: the wolves go to the FBI, and Scott's pack leaves. However, the wolves are murdered. The pack decides they will stay and fight.

Season 6, Episode 16: Triggers - Scott's pack lures hunters away from Gerard's armory, but find it empty, discovering Jiang and Tierney's remains. Liam struggles with his anger, almost harming Nolan. Scott and Malia get trapped, but Lydia saves them. Gerard's global Nemeton map is revealed, and Melissa is shot as Gerard's guns are distributed. The episode concludes with a shocking attack on the McCall house.

Season 6, Episode 17: Werewolves of London - In London, Jackson and Ethan are attacked by hunters, leading them to realize Gerard's involvement. Back in Beacon Hills, Scott, whose mother was shot but survived, decides to fight back and recruit an army. Lydia discovers the Anuk-Ite has a second face. Jackson and Ethan return to Beacon Hills but are immediately captured by Monroe.

Season 6, Episode 18: Genotype - Scott and Liam identify Mrs. Finch as the voice on the voicemail, learning her daughter Quinn is the other half of the Anuk-Ite. Lydia and Malia try to communicate with Halwyn, discovering he's alive but needs a bullet removed. Quinn and Aaron merge to become the Anuk-Ite. The merged Anuk-Ite then meets with Gerard.

Season 6, Episode 19: Broken Glass - Argent seeks Derek in Brazil, finding him before Kate Argent steals crucial wolfsbane. Scott and Malia train with Deucalion, but Deucalion is killed by Monroe's forces. Nolan leads Liam into a trap at the hospital. The episode concludes with Scott and company facing a large number of armed hunters.

Season 6, Episode 20: The Wolves of War - Scott and his pack face Gerard's final attack, with allies old and new. Gabe is killed during the battle. Scott blinds himself to defeat the Anuk-Ite, who is then trapped by Stiles. Kate attacks Gerard, presumably killing him. The episode ends with Scott and Argent rescuing a new werewolf, continuing the fight against Monroe.