On the first day after graduating from the police academy, Xu Zhou was involved in a murder case and was killed by the murderer with a rice cooker. When he opened his eyes again, he went back to twelve minutes ago and was bound to the crime retrieval system. From then on, when others rushed to the scene after receiving the alarm, he could always stop the murderer in advance; when others discovered clues, he already knew what to investigate next. But backtracking can only allow him to start over, and he cannot conjure evidence out of thin air. If he wants to convict, he still has to visit, reason, and complete the evidence chain honestly. Just when the whole team suspected that Xu Zhou was either a fortune teller or had a special relationship with the murderer, the "princess" Lu Xingwan, the leader of the provincial department, parachuted into the serious crime team and listed him as a key observation target on the first day. At first, she thought he was impulsive, illegal, and unreliable. Later, when Xu Zhou solved a case, she believed him a little more; when he saved someone, her heart moved a little more. When she came to her senses, the observation file had already written about Xu Zhou's diet and daily life from the suspicious points of the case. Xu Zhou was still working hard on solving the case. After all, murderers don't wait for anyone, so love can come later.