Pareena's life had always been beautifully perfect until the demise of her father, who was like her life's sunshine. After her father's death, Pareena discovered a mystery surrounding his untimely demise and thus began a journey of discovering the mystery and restoring her father's honour.
The more she digs, the more she learns how different human personalities can be in front of different people. This is not just for her later father, but also Korn, who behaves like a rebel with a free spirit, and Karn who has always been her perfect brother.
The more she digs the more she realises that where there is sunshine there are also shadows. Humans can do wrong. Nobody is truly perfect.
Adapted from the novel “Tai Ngao Tawan” (ใต้เงาตะวัน) by Piyaphon Sakkasem (ปิยะพร ศักดิ์เกษม).
Duangjan is a cold-blooded, young assassin for a mafia group. One day, due to a failed mission between Duangjan and Lok — an assassin within the same group — Duangjan ends up falling off of a cliff. However, she is saved by the head of the national park, Atiruj. When she wakes up, Atiruj realises that the young woman who he saved has developed amnesia.
The once cold and calculated killer suddenly turns into a cheerful little girl and finds herself not only with a new name "Chao Chao", but also a fake husband, Atiruj — who just so happens to be escaping his mother who was determined to marry someone else.
After the death of his father, Kawin returns to Thailand from abroad to take over the wig factory. In search of material, he finds Warunee, the owner of a beauty salon, who introduces him to Gaysinee, a model with long silky hair that advertises shampoo. Kawin asks Gaysinee to sell her hair to him, but the girl flatly refuses.
Years pass, Kawin's business lives and thrives. One day, he finds a strand of hair that suspiciously reminds him of Gaysinee. Kawin instructs his staff to make a wig out of this hair, but everyone who wears this wig falls victim to mysterious incidents.
Prim is an orphan. She and her two best friends, Boot and Rita, work at one of P. Paul's shoe stores and Prim dreams of becoming a shoe designer. After an incident, they get fired from their jobs and decide to go on vacation to Phuket. There, the girls attend a party while pretending to be rich. At the party they meet Phuree, Wat and Touch. They're all rich and Phuree is the heir of P. Paul's shoe brand.
Their relationship started as Phuree wanted to show that Prim and her buddies were deceivers, so the guys also lied about who they really are to get closer to the girls and lure them into confessing. But after spending so much time together, Phuree and Prim fell in love.
Though they confessed that they loved each other, things didn't ended up. As Prim found out Phuree's real identity and that he already had a fiancee.