After his father died in a car accident, Gu Chuan was left with a repair shop that was about to be foreclosed.
Until that day, he dug out a ledger from his father's old toolbox. What others see is waste paper, but what he sees is where each machine is broken, who is broken because of it, and who will be killed.
Changing bad consequences is not free. To repair a car, he has to pay for a relic of his father; to save a life, he will be one step closer to the truth left behind by his father.
Was that car accident that year an accident, or was someone forcing a car mechanic to shut up?
Gu Chuan closed the ledger and hung up the shop sign again.
The debt you owe money can be postponed, but the debt you owe your life must be paid by someone.