In the sweltering heat of an Australian summer in 1986, three lifelong mates gather at a secluded beach house for a wild weekend getaway. What begins as a sun-drenched celebration of friendship quickly spirals into a nightmare when a harmless practical joke misfires catastrophically. Suddenly, the trio finds themselves trapped in their idyllic retreat, fighting desperately against a relentless, bloodthirsty threat. As the scorching days blur into terror-filled nights, their bonds are tested to the breaking point in a brutal, gory struggle to outlast the nightmare they unwittingly unleashed.