[1][2] The story primarily focuses on the karmic life between Siu-Kat Yuen (Niki Chow) and Chi Lik "Power" Fong (Michael Miu).

A dutiful cop, she works hard to maintain order and justice, however, secretly, she's on a personal quest to find her mother's killer.

However, she eventually told Yat-San of her past and he wanted to help her move forward with her life, but she only felt he was interfering in her personal matters.

His greatest vision is to reclaim a series of old estates to re-develop those territories into the latest commercial zone as Sleepless City; unfortunately, he suffers from a heart condition that has been slowly eating away his health.

His wife, Sin-Hang Tong (Joey Meng), is a trained nurse and has been managing his health as he continues to pursue his mega real estate ambition while tempering his stressing nature.

[3] Although Power was suffering from heart complications, he continues to be impatient, angry, and irritable to everyone around him, including the medical staff caring for him.

[3] Through a combination of a renewed chance for life and inheriting the goodness from Dr. Yiu's heart, Power began to show a change in personality.

He's no longer as ruthless and unforgiving as he used to; he began to work in more social development-based causes and even treated his staff around him with a more pleasant attitude.

Eason's father made a selfish decision to abandon his previous family for the sake of greater financial gain with his new one, however, his actions would indirectly lead to many tragedies.

Although she had other relatives to help raise her, she was often abused; all of this negativity shaped Sin-Hang into the manipulative, ruthless, and spiteful woman that she is today.

Concurrently, Power assigned Yuet-San to go undercover for him to keep tabs on his wife's activities, however, that lead to misunderstands and negative feelings from his friends and family.

Secretly, Eason and Sai Kau Yip (her subordinate, god-father, and father to Wing-Yan) started to look into the case for her and later collaborated with her.

By chance, a piece of jewelry from the crime scene was found and it linked to Sai-Kau's (Benz Hui) wife (Akina Hong) as the killer.

The revelation was heartbreaking to Siu-Kat as she loved her God-father and his family; both Wing-Yan and Sai-Kau kneel and begged for mercy, but Mrs.Yip was ultimately arrested and sentenced for secondary degree manslaughter.

The deal was that Sin-Hang would help use LCK Enterprises to help clean his dirty money in exchange for his resources to keep the Sleepless City project afloat, but things went awry when Power was released and realized what was happening; Power seized those assets and threatened the triad boss with the police to end their ties.

Taking advantage of Sin-Hang's fragile mentality, Siu-Kat staged a fake supernatural event in the parking lot, by having Yuet-San put on a doctor's robe to resemble Yat-San, to fool her to think karmic forces are after her.

However, not long after, the police that were transporting her through a rainy day lost control of their van and it slipped right into the sea and Sin-Hang's body was never recovered; she was presumed dead.

However, while working on a farm site with some children, he encountered a loving teacher that had a strong resemblance to his dead wife (also played by Joey Meng), suggesting he'll try to start a new life with her.