Description：Ling Chenfeng (played by Chu Chien-hsueh) is the sergeant of the New Territories North Emergency Team. During a mission, Ling Chenfeng's actions were obstructed by a man named Kwan Ting-man (played by Wong Ho-sun), and a fierce battle eventually broke out. Ling Chenfeng's father Ling Hai (played by Law Lok-lam) unfortunately died in an accident, which made Ling Chenfeng very self-blame. However, what she didn't expect was that she actually had the ability to turn back time. She returned to three days before the incident with high morale, hoping to save her father's life. However, things were not as simple as Ling Chenfeng imagined. When she returned to the past, her every move would affect the direction of the future. In the end, Ling Chenfeng successfully rescued his father, but accidentally discovered a shocking conspiracy of collusion between police and criminals. Ling Chenfeng, who was full of justice, resolutely returned to the past again, but discovered that his enemy