After a heavy rain, Jiang Yu woke up and found a strange brass key beside his pillow.
The person who left the key was the woman who temporarily stayed at his house last night - Su Wan.
Jiang Yu originally thought that this was just an accident. But as this key opens a room that has been dusty for many years, an old project case from eighteen years ago resurfaces. The truth about the father's years of responsibility, the forged signatures, and the construction problems that were covered up were revealed bit by bit.
In order to find out what happened to their father, Jiang Yu and Su Wan started from an inconspicuous small studio, renovated old buildings, investigated potential project hazards, and carried out urban renewal. They gradually gained a foothold amidst pressure from their peers, capital games, and family resistance.
He wanted to clear his father's name.
But she unknowingly left herself in his life.
Many years later, it was another rainy night.
Su Wan placed the key next to his pillow again.
This time, it was the key to their home.
