This article analyzes the challenges faced by the inhabitants of the island of Rapa Nui in connection with climate change-related environmental and socio-economic problems, and the survival of the islanders' cultural identity and their very sustainability. A qualitative research methodology was adopted, using observation and in-depth interviews within a life course approach. An innovative and creative methodology was employed, cross-referencing and comparing data from 2011 and 2020. This methodology has led to the further strengthening of a new concept in sociology and the social sciences in general: profiguration (intergenerational and interdependent socialization). Based on the results of this study, some analytically robust descriptions were made of the socio-cultural and environmental situation in Rapa Nui, and of an increasingly sustainable social development model. It is a model of social development that is on the way to being sustainable, intercultural, intergenerational, and promoted by the community.