Angkab, a daughter of a jewelry tycoon, was in love with Jed but he in turn decided to marry a distant cousin named Ganda. She went to destroy the marriage ceremony by releasing snakes into the ceremony. A relative was bitten by the snake instead. On the way home, Angkab got into an accident and her spirit went to where Nakhee lives. Nakhee decided to possess the body of Angkab because she had the same history as hers, betrayed by love. Nakhee's mission is to wreak havoc in the human world in the name of vengeance.
When vengeance rules the heart, Nakhee looks for a weapon to use in destroying her enemy. She found akeenaka but her enemy has a stronger weapon and that is love, a love that she's been seeking and waiting eternity for.
"Sai Roong" speaks of memories and the steadfast love of a young woman named Maythinee for a man whose name she calls out whenever she dares to feel, for her lover, Pak, who died in a car accident after her mother forced her to write him a breakup letter.
Her lover is gone and the memories of the past, no matter how beautiful, can not come back.
All Maythinee can do is drown herself in alcohol and try to forget. And perhaps also endure the heartbreak of suddenly seeing her dead lover's face in another man.
However, it is unknown to her that the man with her dead lover's face is indeed her dead lover, Pak, who is still alive and living under a new name, Ponsithon.
While Pak had loved her, Ponsithon is still burning in the flames of betrayal until his only desire is to get revenge.
Sai Roong, meaning Rainbow, speaks of memories and life lessons. It shows the value of love and prayer.
Because no matter where the end of the rainbow is, and no matter how out of reach it may be... for the feelings that are so dear to the heart, travelling till the end is nothing hard at all.
