Su Wanzhao, a cold-blooded paranormal investigator, is involved in a series of "unfinished records" death cases - the deceased all sent "I'm done" messages to anonymous accounts before their deaths. There were no injuries at the scene but they appeared to have died of panic. Lin Yu'an, a sultry beauty review blogger, was accidentally involved in filming a vlog of a supernatural place. She relied on her keen micro-expression observation skills to help Su Wanzhao break through the clue bottleneck. During the collaboration between the two, Su Wanzhao gradually let go of the cold and hard shell she had developed due to the death of her parents in childhood, and Lin Yu'an also revealed his desire for stable emotions beneath his "cynicism" appearance. However, the murderer behind the scenes turned out to be Su Wanzhao's childhood sweetheart, the yandere surgeon Gu Huaichuan - he fell into paranoia due to the "abandonment" that Su Wanzhao chose to leave to save him, and designed the case just to get the heroine to return to him. Gu Huaichuan continued to destroy the relationship between the two by tampering with evidence, kidnapping Lin Yu'an, and revealing the heroine's past that "indirectly caused her disability." Su Wanzhao struggled between "truth" and "emotion", and finally discovered that Gu Huaichuan's "sacrifice" was a self-motivated scam, while Lin Yu'an's "arrogance" was behind the sincerity that he guarded with his life. When the two worked together to solve the case, Lin Yuan fell into a coma to protect Su Wanzhao. Su Wanzhao faced Gu Huaichuan's madness, and finally used "unfinished regret" to resolve his obsession, and also gained late love.
