Maythawadee and Maythawalai are sisters who love the same guy, Phakinai. Maythawadee sets a plan to send her sister to marry the king of another land to get rid of her because she knows Phakinai loves Maythawalai. During her departure, a storm hits the boat Maythawalai is on and it sinks it. Phakinai tries to protect Maythawalai, however, both of them drown together. Maythawadee's spirit was then caged underwater. She watches and protects any antiquities that fell from boats and kill people who are coming to steal. Maythawalai is then reborn as the daughter of a colonel who studies archaeology.

Makoto Masaki and Haruko Kogetsu are both 29 years old and single. Since they were children, they have passed each other at various places like on the beach and shrines. Yet, the two are not aware of each other at all. One day, a man appears in front of Makoto Masaki and introduces himself as God. He tells Makoto Masaki about his destined soul mate and that she works next door. When he faces Haruko Kogetsu, he tells her "I'm your destiny."

About two twin brothers who were separated at birth and raised completely differently.

Adapted from the novel "Duoqing Jianke Wuqing Jian" of the Xiaoli Feidao Series written by Gu Long.

This series is different from the past detective stories. The Lieutenant is collection of true mystery stories in which the detective, Ninzaburo Furuhata, must solve ingenious crimes and outwit elusive criminals. Although Ninzaburo Furuhata is a government officer, he does not wear a tie. Although he specializes in murder cases, he does not carry a gun. He does not use violence. More than anything, Ninzaburo Furuhata conducts himself as a gentleman, and uncovers the tricks which outwitting genius criminals play by cool reasoning and smooth talking. In every episode, Ninzaburo Furuhata will introduce a different criminal in his memory, and share his experience tracking and interacting with these criminals.

The story starts in 1921. Jao Karmfah is a nobleman from Chiang Mai. As an arrangement by family members, he is engaged to Yaowalak. After returning to Chiang Mai for business, he falls in love with Fongkae at first sight. Karmfah decides to break off his engagement with Yaowalak to pursue Fongkae. However, Fongkae already has a man she loves, Khun Chai Yingsak Warangkorn. Fongkae's parents prefer Karmfah as their son-in-law and locks Fongkae away, pending her nuptials to Karmfah. Yingsak sneaks into Fongkae's home and takes her away. Upon hearing of this, Karmfah quickly chases them. When he finds them, he realizes that he cannot force anyone to love him. Just as Yaowalak could not force him to love her. He allows them to be together, and gives Fongkae a hair brooch he had specially crafted for her. Fongkae and Yingsak would go on to have two children, Mom Luang Sakchai and Mom Luang Sommapa.

Yaowalak, who was labelled as a disgrace by society when her fiance abandoned her, meets Than Chai Kietkong Suppakhun. He quickly becomes smitten by Yaowalak. But he has a secret relationship with one of the royal servants in his palace, Pleum. Pleum would fall pregnant with Kietkong shortly before he is to wed Yaowalak. Pleum keeps the pregnancy a secret and marries the royal chauffeur, Fu. Pleum would give birth to Plaewadee. Kietkong marries Yaowalak and has a daughter, Mom Ratchawongse (Khun Ying) Yorkiet, nicknamed Yingyor.

The lives of their children would later become intertwined with the brothers Pakinai and Pubadee. Both are children of Yaowalak and Kietkong's close friends. The decisions of their parents will bring upon a complicated and tangled web of deceit, love, and lies. However, the story does not end with the children, as the parents will also have to answer for their own desires and loves.