Gu Wanwan's uncle died suddenly and so she flew to Switzerland to comfort her aunt. Wanwan discovered that the caviar company (O-One), her aunt now ran, was hit by a lawsuit. She was originally only planning to stay for a short time, but her aunt adopted her to help run O-One.
Louis, a solicitor, had flown to Zurich to fulfil his mother's last wish and, by coincidence, met Gu Wanwan. While their relationship was complicated by the fact that each had an existing partner, they both found themselves single again. Unfortunately, Louis stupidly ruined his chances with Wanwan with a crass joke.
A few months later, when Gu Wanwan flew to London to see a client, she realised …