The labor shortage in Taiwan has left citizens with little time to care for young children and older adults at home. However, young children and older adults can learn to care for one another through intergenerational learning. This case study investigated intergenerational learning in a preschool to determine the motivations and design elements of its curriculum and the challenges encountered during implementation. The motivation was to enable young children to learn from the experiences of older adults and to care for those around them. The curriculum was thematic and based on interactivity. The challenges were insufficient human resources, funds, reference materials, and knowledge of intergenerational learning and curriculum design as well as parental concerns regarding the adult day care center and the health of the older adults involved. The young children and older adults exchanged life experiences and changed their original perceptions of each other. Their interaction created a feeling of mutual love. This study also provides suggestions for implementing intergenerational learning in Taiwanese preschools and for increasing awareness of this topic.