Lu Zhanye, a retired soldier code-named "King of Hell", infiltrated the top conglomerate "Xinghuan International" incognito in order to track down the secret clues about the sacrifice of his comrades. On his first day on the job, he accidentally died trying to protect the frosty CEO. When I opened my eyes again, I was back to the early morning of that day. The assassination, the conspiracy, the cold gaze, everything was reenacted accurately. He was trapped in the cycle of death on "entry day" from which he could not escape.
Until he discovered that the key to breaking the situation was not to crack the murder scheming, but to melt the iceberg named Su Qingying - the business queen who had broken with him for seven years and hated him to the core, and his ex-fiancée. During the 24 hours of infinite restarts, he used tactics to deduce every encounter, just to get a look of trust from her. When reincarnation finally moves forward, the lurking shadows emerge. This time, he must use his real flesh and blood to protect the lost light of dawn amidst the hail of bullets and commercial secret wars.