Ten years ago, Su Wanqing suddenly disappeared, and voice appraiser Lu Chen always thought he had been abandoned. Ten years later, an old mobile phone and an unsent voice message made him realize that her departure was actually to protect him. The deleted video and suspicious death records pointed the clues toward a sealed conspiracy. As the investigation deepened, past misunderstandings gradually disintegrated, but new crises approached step by step. What evidence did she actually leave before disappearing? When the last voice message was restored, the truth hidden for ten years finally surfaced.