Tung-Tung and his 4-year old sister (Sun Cheeng-Lee) spend the summer in the country with their grandparents when their mother is hospitalized due to a gall bladder problem. Told from the point of view of 11-year old Tung-Tung (Wang Chi-Kwang), Hou Hsiao-hsien's Summer at Grandpa's is a sublime meditation on growing up and its inevitable loss of innocence. Hou shows how the children try to insulate themselves from the outside world but can never quite escape it, being compelled to include adult events in their life of which they have little comprehension. Ting-Ting writes beautiful letters to his parents that show a delicate sensitivity but also a lack of understanding of what the adults around him are up to.
In typical Hou fashion, each character has strong points and weaknesses. The grandfather (Koo Chuen), a doctor, is loving but also harshly judgmental, forbidding the children's uncle to marry his girlfriend, and the uncle shows an immaturity that belies his age. The children also are complex characters whose reactions reflect their inability to express their feelings. For example, when the boys go swimming without her, Tung-Tung lashes out by taking their clothes and floating them down the river. One of Hou's most accessible works and one of his warmest, Summer at Grandpa's contains a hint of melodrama, but it is balanced with Hou's typical sense of the natural rhythm and flow of life.