Season 1 of Under The Moon's Shadow premiered on July 9, 2015.

After the parents of Paboo divorced, she was sent abroad to study. She remained there for 10 years before returning to Thailand without completing any of her studies. She came back spoiled, rebellious, and unwilling to make an effort for anything. Her father and his new wife disapproved, so she turned to her also re-married mother who provided her with a place to stay at her stepfather’s family hotel suite. Then Paboo was encouraged to find a job, but her lack of experience or a degree made it difficult to secure employment.

Meanwhile, Satayu, the president of the hotel company begins working to re-construct the family restaurant. He hires the architect, Buree, and then Paboo to help make the re-opening a reality. The three form a bond while working with each other. In the end, Paboo will have to decide who she is truly in love with. Who will win her heart? Will it be the bubbly and charismatic Buree? Or the kind-hearted and understanding Satayu?