The details of undercover police officers are deleted from a police database and a senior officer is left struggling to know who are the undercover officers and who are the criminals.

Man and Yee met and fell in love with each other more than ten years ago, but they broke up because of their youth and arrogance. When they met again after many years, Man was obsessed with Yee, and was willing to give up his rambunctious life and keep his feet on the ground. Yee's father is suffering from dementia. Yee has to take care of her father, and her work is also very unsatisfactory. The heavy pressure makes her also develop symptoms of dementia. Man has not been able to find a job because of his low education. Can they stay together in adversity? How to find a way out of the predicament?