Mira scouts the Thorndike property alone and discovers an unexpected plane and airstrip on the Darvish land.

Lemoine returns Mira's broken camera, gives her the farm gate code, and promises not to tell the Darvishes.

Lemoine hacks Mira's phone in under twenty minutes and deploys a drone to secretly monitor her movements.

Lemoine's perspective reveals he is secretly mining rare-earth minerals from the national park without government knowledge.

Mira announces to the Birnam Wood group that billionaire Robert Lemoine has offered them $100,000 in funding.

Tony argues against accepting Lemoine's money and walks out after the group votes against him.

Shelley and Mira pack up their flat and drive together to the Thorndike farm to begin working.

Owen Darvish finds an email from Tony Gallo requesting an interview about the Lemoine land sale and panics.

Shelley, tripping on acid, loses control of the van and kills Owen Darvish at the farm gate.

Lemoine emotionally blackmails Mira into helping move Owen's body and alters phone records to erase his visit.

Tony photographs Lemoine's toxic leach pits and is immediately cornered by armed security vehicles on the road.

Surrounded by black SUVs, Tony jumps from a roadside cliff into a river, breaking his arm and ankle.

A delirious Tony finds Mira at the farm and tells her he has located Lemoine's illegal mine.

Lady Darvish arrives at the Thorndike house after Owen's funeral and finds evidence of a violent struggle inside.

Lady Darvish shoots Lemoine between the eyes; his bodyguard kills her; Tony sets the mining site ablaze.

Mira Bunting's solo scouting trip to a vacant New Zealand farm ends in a dangerous encounter with billionaire Robert Lemoine, who secretly offers to fund her guerrilla gardening group while conducting illegal mining in the national park. Mira presents Lemoine's money to Birnam Wood, triggering a rupture with principled founder Tony Gallo, and she and Shelley travel to the farm to begin work. The crisis deepens when Shelley accidentally kills the farm's true owner, Owen Darvish, and Lemoine manipulates Mira into helping cover up the death. Tony, who had been investigating Lemoine independently, discovers the toxic mine site, is hunted by armed security, and escapes badly injured into a river. He finds Mira and shares his discovery, but Lemoine intercepts them and begins executing his plan to frame Tony for mass murder. Lady Jill Darvish arrives to uncover the truth, shoots Lemoine dead before being killed herself, and Tony sets the mine ablaze as a final signal to the world.

The core crimes and confrontations that drive Birnam Wood's plot.

Mira researches the Thorndike property online and concludes the Darvish farm is vacant and perfect for guerrilla gardening.

Shelley is approached by Tony Gallo, who has just returned from Mexico and is looking for Mira.

Shelley tells Tony that Mira was very drunk during their one-night stand, visibly wounding his pride.

Mira secretly accepts $10,000 from Lemoine into her personal bank account before consulting the rest of Birnam Wood.

The newly knighted Darvishes host old friends for dinner and Jill accidentally reveals they have sold the land.

Tony hikes into wilderness near Thorndike and discovers a fenced-off research area with a security guard and cell mast.

Tony watches Mira and Lemoine speaking at the farm, then records Lemoine's plane registration number before leaving.

Lemoine recalls how Lady Darvish secretly offered to smooth his land deal behind Owen's back during negotiations.

Lemoine arrives unannounced at the Thorndike farm with food and acid as gifts for the entire Birnam Wood group.

Shelley publicly confronts Lemoine at dinner about whether he wants to sleep with Mira, humiliating everyone present.

Shelley tells Lemoine that Birnam Wood now demands $1 million, not the $100,000 he originally offered.

Lemoine redirects all official incorporation papers to Shelley rather than Mira, quietly beginning to isolate Mira from the group.

Mira resigns as Birnam Wood's director at dinner and nominates Shelley as the new Executive Director.

Lemoine invites Shelley to the Darvish house after dark and asks her to spend the night with him.

Rosie connects Lemoine's voice to the Darvish news and texts Mira for answers, but never receives a reply.

Before the central conflict ignites, Mira's online research misleads her into believing the Darvish farm is vacant, and Shelley's tense encounter with returned ex-member Tony plants the seed of her desire to break from Mira. Lemoine's offer corrupts the group from within when Mira secretly accepts money before consulting anyone, and the Darvishes carelessly expose their secret land deal at a dinner party. Tony's surveillance of the Thorndike area escalates from watching Birnam Wood to tracking Lemoine's plane and sending a fateful email to Owen Darvish. Lemoine tightens his grip by arriving unannounced with food and drugs, and Shelley's confrontational behavior at the dinner marks her shift toward open ambition. After Owen's death is covered up, Lemoine quietly transfers power within Birnam Wood to Shelley by routing official papers through her, culminating in Mira's resignation and Shelley sleeping with Lemoine. Meanwhile, on the periphery, Rosie pieces together alarming connections between Lemoine and the Darvishes but receives no reply from Mira and never hears back.

The relationships, deals, and details that shape the main events.

Shelley decides to sleep with Tony Gallo to betray Mira and use the act as a reason to leave Birnam Wood.

Mira researches online after fleeing the farm and discovers her mysterious confronter is billionaire CEO Robert Lemoine.

Lemoine's inner monologue reveals his illegal mining operation directly caused the Thorndike landslide that killed five people.

Shelley publicly backs Mira at the group vote, swinging the decision to accept Lemoine's money and forcing Tony out.

Owen Darvish calls Tony back after receiving his email and is stunned to hear about unauthorized work behind his land.

Owen Darvish impulsively books a flight to Thorndike to investigate for himself, acting completely out of character.

Mira looks up from weeding and spots a figure moving through the trees she believes may be Tony.

After a security breach at the mine, Lemoine calls Rosie pretending to be Tony's coworker to trace Tony's location.

Tony turns off his phone and hides in dense undergrowth as a drone sweeps methodically through the forest searching for him.

Lemoine receives drone footage clearly showing Tony photographing the toxic leach pits with a film camera.

Lemoine devises a plan to make it appear that Tony, rejected by Birnam Wood, murdered the entire group and himself.

Mira decides to help Tony escape after he reveals what he found at Lemoine's illegal mining operation.

Lemoine catches Tony and Mira together in the forest at night and confiscates Tony's roll of film as evidence.

Shelley sees Mira's desperate look from a passing car window but cannot interpret it and drives on.

Tony uses his last strength to crawl to the illegal mining site and set the chemicals on fire.

Every character in Birnam Wood is destroyed by a pivotal choice or revelation, beginning with Shelley's calculated decision to seduce Tony and Mira's discovery that her charming stranger is one of the world's most dangerous billionaires. Lemoine's private, guilt-free admission that his mining killed five people establishes the moral void driving the plot, and Shelley's public backing of Mira's funding vote expels Tony and locks the group into Lemoine's orbit. Owen Darvish's phone call with Tony and his impulsive decision to fly to Thorndike set off a chain of events leading directly to his death, while Lemoine's receipt of footage showing Tony at the mine site triggers his plan to frame Tony for mass murder. Mira's decision to help Tony escape is sabotaged when Shelley unwittingly reports her location to Lemoine, and Lemoine captures them both, confiscating the only evidence of his crimes. Tony's final act of setting the mine on fire is both a dying protest and the one gesture that outlasts the catastrophe, ensuring the truth cannot be completely buried.