In 1995, while standing at a crucial turning point in her life, Ân is suddenly pulled back into the past by love letters that were never delivered. Her journey to find Thiên—her first love, deeply etched in her heart—leads her back to the old village of Trà Mây, where sweet memories intertwine with lingering pain that has never truly faded.

In a fateful moment when the two unexpectedly cross paths, long-hidden secrets begin to surface, forcing Ân to confront the truth and choose her own path