Childhood friend Sattaya promises Khun Rae to always care for her as a brother would. However, love develops between them as they grow up. No matter what happens, Sattaya is the first person Khun Rae thinks of and runs to. Although there are other rich suitors for her, Khun Rae could not let go of Sattaya. The same for Sattaya, who is torn between his promise to care for her as a brother and his unconditional love for her.