A “doppelgangers” website has facilitated the connection between two complete strangers that look like identical twins. Law firm partner Ko Sau-shing tracks down his former lover Yu Fung, whom he has not contacted for ages, online, and Yu Fung is looking for a part-time boyfriend with a similar appearance to him. Sau-shing arbitrarily approaches applicant Mo Kei-nam, who is a dead ringer for him. The duo also covertly agree to swap identities for two weeks. Sau-shing plays the role of Yu Fung’s “substitute lover”, and deadbeat Kei-nam disguises himself as Sau-shing while simultaneously dealing with his wife Lee Chi-ying and father-in-law Lee Kwun-hang as each and every crisis at the law firm is handled by him. While the identity swapping deadline looms, this pair of lookalikes are eventually shocked to realize their mutual life trajectories are already different from their expectations.

Because of a kidnapping case, an amnesia case, a missing woman and a big sum of money, waiter Ng Yiu-chung and interior designer Meng Yat-yin bump into each other and develop a subtle friendship. After being saved, Yat-yin becomes an amnesia sufferer. He forgets the kidnapping. His wife Yau Fei-yi, who has paid a ransom, is also missing. Yat-yin wants to rely on Yiu-chung to unravel the kidnapping case and also track down Fei-yi. But Yiu-chung wants to use Yat-yin for finding the vanished ransom. He also has to keep his involvement in the case secret. With psychotherapist Lam Hoi-ching’s help, Yat-yin regains fragments of his memory. However, the surprising truth is steadily revealed as lost moments are gradually realigned.

According to legend, the Buddha’s aide the Roc arbitrarily goes to the mortal realm to cause havoc. The Buddha sends his envoy to go after the trouble maker. The envoy and the Roc engage each other in a duel. Fast-forward five hundred years and an injured man is lying in the wilderness. Luk Ching-yee, female embroiderer in a small village, comes to his rescue. He becomes a laborer at the embroidery workshop and dyehouse. The man runs into enlightened monk Master Wai Yuen in his dream, and his mysterious background is unraveled. He recalls his real name Lee Sau-yuen. He is also reunited with his old buddy Fong Chi-peng. Sau-yuen and female constable So Yau become adversaries. During repeated confrontations, the duo covertly begin to have affectionate feelings for each other. However, Ching-yee also makes advances to Sau-yuen. Black demon crisis then hits the small village. To save the mortals, Sau-yuen decides to forget love and desire. Everything is actually karma. Fate is predestined.

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.

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.

Jacqueline Wong, a maid in the household of the Vice Minister of War, leads an alliance of maids at the six ministries, who trade information and make money together. Roxanne Tong sold herself to be a maid to raise money for her lover to travel to the capital and take the imperial exams. Jacqueline and Roxanne take care of the Vice Minister's first wife and second wife (Angie Cheung), respectively, and fight against each other on behalf of their mistresses. Jacqueline and the young master fall in love, but they are oppressed by his father. Timothy is demoted after committing an offense. Tony is determined to achieve honors from the imperial exam and restore the family's reputation. Lisa Lau, the daughter of the Minister of War (Pat Poon), sets her eyes on Brian and tries to seduce him. Jacqueline and Roxanne worry that they will lose their lovers if they achieve a high rank in the imperial exams, and vow to ruin their scholarly dreams. As the two pairs of lovers are about to break up, they get embroiled in a treasonous conspiracy.