The Hong Kong Airport Special Police Unit (ASU) is a special police force responsible for maintaining public and aviation security, counter-terrorism, key personnel protection, disaster support and many other areas. Encountering different situations on duty, they see the joys and sorrow of life that make them reflect on their own lives. With every step forward, they establish a sense of mission as the airport security police.
Benjamin Yuen, an executive producer, has to deal with the pressure and demands from his boss, and the complaints of his subordinates. Every day, he is exhausted by his heavy workload until one day, he nearly dies. Luckily, paramedic Natalie Tong performs CPR to save his life. Later, Benjamin learns that to extend his life, he must kiss others to steal their time. He uses this to his advantage and sees big changes in his work, family and friendships. Unfortunately, because of him, Natalie suffered serious consequences. Aside from missing her wedding, her fiancé mysteriously goes missing. To help her regain her spirit, Benjamin takes over Yeung Chiu Hoi's coffee shop. He meets barista Hubert Wu and re-encounters his childhood friend Rebecca Zhu, a pole dancing teacher who has feelings for him. Benjamin, carrying the burden of extending his life, gradually develops feelings for Natalie, and fall into the anguish of loving each other but being unable to be together.
Law Lai Jing's love life has been full of thorns. She is over 40 years old and still busy dealing with her ex-boyfriend's debts of gratitude. With no house and no job, and having experienced a woman's most painful of being abandoned by the groom on her wedding day, Law Lai Jing has no choice but to participate in a comeback competition organized by a hotel for the biggest losers. She hopes that it will lead to a stable job and income. It turns out that the event organizer is Chong Fu Ho, whom she had a one-night stand with many years ago. He appears to have forgotten about her. They develop a good employer-employee relationship. Chong Fu Ho's son, Chong Juan Wing, was originally the general manager of the hotel, but is demoted to trainee after angering his father. With help and advice from Law Lai Jing, Chong Juan Wing is able to gradually improve his relationship with his father. Chong Juan Wing loses his direction when he falls in love with a mysterious girl, fellow trainee Mui Sze.
Hong Kong traffic E&C inspector To Cheuk Fung is dedicated to his mission. He and his subordinates often go undercover so they can easily prosecute those who speed, drunk drive, and hold illegal licenses. Cheuk Fung is an extremely cold person, serious in speech and manner, but he is strangely close friends with the boisterous Sze Ma of the investigation team. The duo are left speechless when they meet the rookie cop Bui Sam Yau, who they assumed would not be able to withstand Cheuk Fung’s strict demands. But after Sam Yau helps Cheuk Fung dispel a worry that he has kept locked in his heart for many years, the two grow extremely close, forming a pseudo father-daughter relationship. Sam Yau’s satisfactory performance catches the attention of Sze Ma, who convinces her to join his team. Sze Ma has been less than pleased with his subordinate Yiu Yiu, who prefers to do everything by the book and fails to catch up to Sze Ma’s painstaking style of investigating. Meanwhile, a racing gang has been wreaking havoc in the streets, sending out provoking messages to the police. Cheuk Fung and his team are given the light to track them down, but he ends up stepping into a dangerous boundary. A dark haze he has been avoiding once again appears before his eyes.
The series was originally announced to be a spin-off of the 2011 series Yes, Sir. Sorry, Sir! featuring the popular character "Miss Cool" portrayed by Chung. A costume fitting press conference was held on 21 November 2011 at Tseung Kwan O TVB City Studio One Common Room at 12:30PM.