My wife took over my lair...
The Gu and Lu families are family friends. The childhood sweethearts Lu Wanzhao and Gu Yuyan who grew up together each hid something. It was not until an accident during their marriage that they discovered that their daughter-in-law was the leader of a killer organization, and her husband was the boss of the rival organization. Not only were they secretly hostile, but they only wanted to bring down each other, and their identities were discovered!
Intention: love