After receiving a heart transplant from volunteer teacher Torfun, who died in an accident, Tian discovers her life and secrets through her diary, including her promise to count a thousand stars with Chief Forest Officer Phupha. Determined to fulfill her wish, Tian becomes a volunteer teacher and tries to befriend Phupha, who initially remains distant. As they grow closer, Tian finds himself falling for Phupha, just as Torfun once did. Can he complete the thousand-star promise despite the risks?
