An aggressive businessman from Edinburgh named Marcus takes his boarding-school friend, Vaughn, on a weekend hunting trip in the picturesque Scottish Highlands. Vaughn, who is soon to be a father, has no prior hunting experience. Their adventure begins at a cozy village pub where they encounter community leader Logan and two young women, Kara and Iona.
After a night filled with dancing and drinks, Marcus unexpectedly spends the night with Kara, ignoring warnings about his reckless behavior. Meanwhile, Vaughn and Iona share a tender moment that quickly dissipates when Vaughn, reminding himself of his responsibilities, pulls back.
As dawn breaks, Marcus rouses a still-hungover Vaughn for their hunt. On their way, Vaughn discovers Marcus has been using cocaine and admonishes him. Just before heading out, Vaughn realizes he left his ammunition behind, compelling Marcus to lend him one of his guns, despite the clear breach of firearms regulations. During the hunt, Vaughn unexpectedly shoots and kills a young boy, hidden from view behind a deer. Grief-stricken, the boy's father confronts Vaughn, but Marcus intervenes by shooting the father in a panic.
Despite Vaughn's desire to report the tragic accident, Marcus persuades him that they will be falsely accused of murder. The two men opt to conceal the evidence by hiding the bodies and lying about their hunting location. As they navigate through a complicated web of deceit, Logan expresses a need for help in reviving the economy of the community, while at the same time, a petrol station owner overhears their predicament and raises suspicions that jeopardize their cover.
That night, they bury the bodies and recover the bullets from the boy’s skull at Marcus’s chilling insistence. On the verge of escaping the village, they face additional complications when Marcus’s indiscretions ignite the wrath of Brian, another of Logan's brothers. When their getaway is thwarted, Vaughn learns the unintended consequences of their actions as it becomes increasingly clear that the boys they killed are connected to the community.
Tension mounts as they become entangled in a growing conflict with the locals, which leads to a frantic search for the hidden bodies. Although Marcus attempts to escape, he leaves Vaughn behind to fend for himself, culminating in a violent confrontation with Brian.
In a shocking turn of events, Vaughn finds himself cornered and faced with an ultimatum—kill Marcus or face dire consequences. As Vaughn struggles with his conscience and the loyalty to his fiancée and unborn child, he ultimately succumbs and takes Marcus's life under extreme pressure from Brian. Following this gruesome act, the locals cover up their misdeeds, coaching Vaughn on how to mislead the police when they question him.
Months later, Vaughn awakens, cradling his newborn, yet his once joyous face is now marred with the burdens of his haunting past, leaving him a shell of the man he once was, burdened by the decisions that changed his life forever.
