
Birnam Wood follows Mira Bunting, founder of a scrappy activist gardening collective, as she scouts an abandoned South Island farm near the closed Korowai Pass. The land belongs to pest-control magnate Sir Owen Darvish, whose recent partnership with American tech tycoon Robert Lemoine makes the place look like a jackpot Mira can’t let go. When Mira trespasses to survey the soil, she stumbles into Lemoine at his private airstrip—and into a game he has already rigged. He hacks her phone, studies the group, and soon dangles a six-figure “gift” that could make Birnam Wood legitimate at last.
Back in the city, Mira’s closest ally, Shelley, wants out. Tony, a lapsed member returned from overseas and burning to write his first big exposé, senses rot behind Lemoine’s bunker talk. By the time the collective relocates to Thorndike, the pass remains closed, a secret rare-earth operation hums in the national park, and every character believes they can still steer the story. What begins as a social satire tightens into a thriller about power: who hoards it, who launders it, and who pays for its cleanup.