The Forgotten Valley

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.

Heung Yat Jeen was saved by a kind-hearted man when he was young and since then, his life ambition was to become the world’s best detective. His training and hard work paid off when he solved a mystery case on his first day of work. However, his superior, Ching Ying Hung, was envious of Yat Jeen’s glory and purposely sent him on a dangerous mission to capture a mass murderer, Yi TeenBong.

For the sake of upholding their values and exacting justice, the Chief Inspector of the Traffic Investigation Department and the Superintendent of the East Kowloon Crime Squad join hands in a battle of wits and will against a lawyer who is known for finding loopholes to help his client.

Fai Yan and his younger sworn sister Ko Keung become Lo Yan County Yamen constables. Newly appointed Head Captain Wong Se tells Fai Yan to go to anarchic Yat Tseung Kung City to look for some spy who has lost contact. Boon Lung Sect boss Boon Dau’s minion Moyung Gong-tsz accidentally takes Fai Yan to Yat Tseung Kung City. The city is seemingly a prosperous place, but the four major sects are covertly fighting against each other. The late sect leader promised whoever could draw the Infernal Sword, Tsui Yi Sect Big Sister Fu Ling would marry him. Fai Yan and Gong-tsz confusingly draw the Infernal Sword together, so they both become the top two prospective sons-in-law! The four sects engage in all kinds of shenanigans, and the mastermind has tricks up their sleeve. The identity of the spy is just mysterious. Fai Yan wants to be the prospective son-in-law. And the Yamen spy has to be tracked down. No one knows whether it’s a blessing or a curse.

John Fan Siu-Yue and James Jiu Lik-Wang are both well-known barristers for handling criminal cases in Hong Kong. They have known each other for thirty years, as classmates and pupils under the same mentor, but have been feuding since the first day of law school. During a rough time in his romantic life, John met TV anchor Ophelia Mok; they married after a short affair but divorced just as quickly. When Ophelia coincidentally meets James, the grudge between the two lawyers deepens.