Charlie (George Blagden) spends his days in an old mansion in rural France left by his late father. The mysterious Mia (Anna Åström) appears out of nowhere and seduces Charlie into a tense affair. When one day Charlie’s fiancée Ella (Ellie Turner) announces she will visit, he needs to keep the two women apart and sort out his feelings. However, it turns out that the two women had a romantic relationship in London whilst Charlie looked after his dad. Mia's sudden appearance was not a coincidence, but part of her plan to force the insecure Ella into making a choice. The unravelling of everyone’s secret leads to an emotional showdown between the three.