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.