S1, E1: Nine people, from different walks of life, head to Tranquillum House, a secluded and luxurious wellness retreat where they are promised 'total mind and body transformation'. Frances Welty, best-selling romance novelist, arrives with her personal and professional life pretty much in the toilet. She is immediately intrigued by her fellow guests, apart from Tony, whom she'd prefer never to see again. The person who intrigues her most is the mysterious and charismatic director of Tranquillum House, Masha. Could this person really have the answers Frances didn't even know she was seeking? As Masha outlines the upcoming 10-day healing journey for the guests, it becomes clear that Tranquillum will not be for the faint-hearted, but perhaps this is exactly where they all need to be.