In the Buddhist year 2456 (1913), tradition and status forbid the love between two princesses — Princess Phiangrawi and Princess Sasinapha. Like the sun and moon, they were never meant to shine together. Yet, their love endures, quietly shaping a path through time.

By 2564 (2021), fate reunites them as Katsakorn and Athitthan. Love sparks again, but the journey is far from smooth. Though old rules have faded, shadows of the past still linger. Together, they must fight for a love that once was — and now is again.