Season 1 of Klin Kaew Klang Jai premiered on June 19, 2007.

Mesa gets married with Orachun and realizes later that he is in love with Jitta. Orachun and Jitta had an affair, and she gave birth to a daughter. Mesa is vengeful and jealous of them, so she switches Jitta's baby with a prostitute's baby.

Many years later, Apo, the prostitute's baby, grows up in the noble and rich family while Prapai, Jitta's real baby, grows up in the orphanage. With hatred, Mesa gradually poisons Orachun and he dies. When Jitta knows, she sends someone to exchange his ash bottle and brings his ash to spread under the Orange Jasmine tree near Klin Kaew House on the island that Orachun had built as a symbol for their love.