On the night of my mother's sudden death, I was kicked out of the inheritance list, and her most beloved sister, Lu Tangyin, became the only beneficiary. No one believed me, even the lawyer said, 'You have no right to fight'. But I know that the piece of paper my mother clutched before she died was definitely not signed by her. When I followed the old housekeeper's recording, the testator's USB flash drive, and my grandmother's crazy ravings, and got closer to the truth step by step, I discovered that the coldest murder was hidden under the gentlest mask. This time, I was no longer the sister who cried silently - I was the only real beneficiary of the will.