Lin Yue is a control freak.
A technical partner at a top internet company, he has spent eight months using code he wrote himself to monitor his wife, Su Wan.
Her location, social media accounts, the cameras at home: he has everything under control.
Until he discovers a mysterious contact with the codename “K.”
Late-night chat logs, suspicious hotel locations, suggestive messages like “You have nowhere left to turn”: every clue points to a truth he cannot bring himself to believe.
He follows her to Beijing and, on a rainy night, takes a photo of her walking beside that man.
But when he gets a trembling call from Su Wan before dawn and rushes into her hotel room, he realizes he has fallen into a much bigger trap.
The man named Zhou Yuanhang destroyed his family fifteen years ago.
And now, that man is making his way into Lin Yue's marriage, one step at a time.
More terrifying still, Su Wan seems to know something, too.
This is not a story about infidelity.
It is a suspenseful romance about trust, betrayal, generational trauma, and self-redemption.
When the watcher discovers he is the prey, and the roots of suspicion lead back to a summer fifteen years ago
Lin Yue must choose: keep living in fear, or learn to truly trust.