In a past life, Lu Yuan died in battle to save Liu Ruyan, only to learn before dying that ten years ago, the one who blocked a fatal blow for him was not Liu Ruyan, but Lin Xiyao. Reborn back to Crisis Era Year 22, with only two days left until Lin Xiyao's death, he publicly rejects Liu Ruyan's invitation, chooses to rush alone into an abandoned factory to save Lin Xiyao, and initiates a subsequent series of revenge actions. Liu Ruyan panics, Chen Hao grows anxious, and the Chen family begins frantic suppression. But what Lu Yuan wants is not just revenge; he wants to stand shoulder to shoulder with Lin Xiyao and weld shut in advance the fractured Jiangnan defense line of ten years later.