Once upon a time in Khau Vai area, where the Giay village had a beautiful Ut girl, the daughter of the patriarch. Her beauty makes many men fall in love and want to marry her. Although her family is well off, her heart only burns in front of Ba - a Nung man in the neighboring village. Their love affair continued to grow silently over the years. The two love each other, but the family of Ut disagrees because Ba is poor and from a different ethnicity. A Nung son cannot marry a Giay daughter. In the face of the harsh ban of the family, he and she ran away from home and moved to live in a high mountain cave...