Deep in the woods, you can hide more than secrets...

Every day, in a remote cabin hidden deep in the woods in the Scottish Highlands, Mary wakes up before dawn to make breakfast from scratch. She tends the garden and feeds the animals. Every night, Mary makes sure she has dinner on the table for when her husband Cal gets home from work.

She puts on his favourite lipstick and greets him with a smile. 'I've missed you.' It's not true and he knows it. But he likes to hear it all the same.

Mary is the perfect wife and like any good wife she knows her job is to keep her husband happy.

But lately as she notices her first wrinkles appear, she can sense Cal change. A scowl at dinner not being ready on time, a too tight grip as he leads her to the bedroom tells her he's noticed too. And old memories are coming back too, of her life before the cabin...

Then she finds a stack of letters hidden under the floorboards detailing a life eerily similar to her own. They're addressed: 'To the next woman.'

If she’s not the first to play the role of Cal’s perfect wife, what happened to the woman in the cabin before her? And how long does she have until she is next?