This is a story about the "caged bird" and the "knife holder". The female protagonist Shen Jingning carries a blood feud and believes that the male protagonist Fu Xingzhou is the enemy who wiped out her family, so she uses her body as a bait and works every step of the way with the intention of revenge. The male protagonist Fu Xingzhou is actually the son of her father's old friend, another victim and survivor of the massacre that year. He imprisoned her in an extreme way, not only to protect her only bloodline, but also to complete a revenge plan that spanned more than ten years. The two torture each other in extreme misunderstanding, hatred and control. When the bloody curtain of the truth is lifted, how will they find the possibility of love and redemption again on the ruins of hatred?