I came back early from a business trip. I wanted to give my wife a surprise, but instead I stepped into a carefully arranged game in the dark. After a night of absurdity, the truth breaks through the disguise - the so-called "loyalty test" is just the beginning of a larger conspiracy. The tenderness and trust in marriage are swallowed up bit by bit by calculations and desires. From intimacy to frightening step by step, murderous intent is hidden in every step. When your pillow partner is no longer reliable, when everything may be a trap, the relationship has already deteriorated. Some people are plotting, some are being exploited, and the real battle has just begun.