When four female friends go on a retreat to a secluded lakeside cabin, they soon realise they’re not alone. Masked intruders try to take them hostage, but as they fight back, the 　　When four female friends go on a retreat to a secluded lakeside cabin, they soon realise they’re not alone. Masked intruders try to take them hostage, but as they fight back, the friends get a taste for something more than the will to survive. Will their fate be as victim or executioner? 详情