Mary and her husband are traditional Muslims living in the UK. They have been in love for 40 years, but her husband passed away suddenly without warning. They once had a child and lived as a family of three, but now she is left alone. The pain has not yet subsided, and Mary unexpectedly found photos of a strange woman and records of ambiguous conversations. She followed the clues to Calais, France, which is 34 kilometers away across the sea. There, she found another French woman who had lived with her husband for many years. Not only did she not recognize Mary, she didn't even know that the man they shared was no longer alive. By chance, Mary became the other's maid, not only stepped into the other's cabin, but also entered her husband's secret life.