Louise never thought she'd be the sort of woman to have an affair. She's a good wife, a good mother and a good daughter - even if she is far from happy.
But everything changes when Louise crosses paths with Oscar, a man fifteen years her junior. She knows what they're doing is wrong, but she just can't stop...
When odd messages begin to arrive, it seems clear that someone has been watching Louise, and that they know her secret.
They don't just want Louise to stop her affair with Oscar though - they want much more.
And they will stop at nothing to get it.