A terrible secret haunts Le Locle’s memory. Amid serial murders and superstition, a love story unfolds in the world of watchmaking and healers.
Lyne Tremblay, a young woman from Quebec, inherits the Univers watchmaking workshop in Le Locle, managed by Vincent Girod. On arriving to settle the estate, she has a strange vision; hours later, a man is murdered.
Since Lyne arrived in Le Locle, two murders have occurred and a long-buried event has resurfaced: ten years earlier, a bride died in an accident on her wedding day.
Lyne's nightmares persist, replaying the image of a bride falling violently to the ground. Joseph, a healer, convinces her they are visions and urges her to pursue them. As the police investigation stalls, an inspector from Neuchâtel arrives to help.
Lyne has new visions: the people at the wedding years earlier are the same people being murdered today. She is shaken when she discovers compromising clues in Vincent's apartment.
The police investigation has stalled: reports are poorly written and clues vanish. Vincent gives Lyne an old clock, whose sight triggers a vision revealing the full course of the wedding from the past.
Despite their feelings for one another, Lyne and Vincent cannot seem to imagine a future together. Lyne decides to return to Quebec when she suddenly has a new vision.
Without informing her superiors, Inspector Ariane decides to work with Lyne to uncover the truth. Together they seek to unravel the bride's secret and learn who was with her at the foot of the stairs on the day she died.
