The employee of a financial group, based in New York (Dane DeHaan), was assigned to travel to Europe. He should pick up his boss and bring him back to New York.
His boss is way to long in a therapeutic institute in the Swiss Alps. Shortly after the employee had arrived, his boss disappears. Now the employee has to stay longer. He gets to know a patient (Mia Goth) and together they find out, that somethings wrong at the spa. Relaxation is secondary and just a trap. Secretly somebody has his own agenda!