Since relocation to chek lap kok in 1998, passenger traffic at hong kong international airport has increased threefold in twenty-five years. and yeung sheung-wai, who started out as a clerk, has been promoted to iac duty manager. he is tasked with overseeing the operations of the airport. sheung-wai also has a contingent of amicable partners, including his assistant-cum-admirer fong ho-yee, lui chi-shan – who handles airport passenger services – chan kit – who takes care of aviation security – and lee sing-cheung, who is responsible for apron services. they collaborate to assist in dealing with all kinds of incidents that take place at the airport. sheung-wai keeps in touch with his ex-wife cheung yeuk-ling, metro harbour airlines airport supervisor. actually, they still think of each other after their divorce. the duo’s relationship is rekindled when airline captain kwok kai-kwong and flight attendant ko nga-man turn up.