After a lifesaving heart transplant, Tian discovers his donor was Torfun, a volunteer teacher, and her journal inspires him to honor her memory by taking her place at a remote village school.
Tian struggles through a disastrous first day as a teacher, facing embarrassment, unruly students, and cold shoulders from villagers that leave him doubting his place.
Tian bonds with the Phu Phan Dao villagers through their tea trade, but when he exposes cheating merchants and sparks a violent clash, he fears he’s lost their trust.
Tian discovers that Phupha knows his father causing him to question their relationship. Phupha pushes Tian to return home after a New Year's party hosted by the village.
The day arrives for Tian to return to Bangkok. As he adjusts back to his old lifestyle, he still thinks of Phupha and the village leading him to question his desire to finish his engineering degree.
