North & East Finland, in particularly South Savo region with a pristine nature, is an interesting case study to be investigated for spatial mobility and its relationship to Twin Transition, as the sparsely populated region has been witnessing long-term population decrease. Interestingly, secondary housing (temporary mobility) and temporary transnational labour force are becoming a significant part in boosting the region. In particularly, South Savo region with a population of 130 thousand has secondary residences for hosting additional 100 thousand temporary residents. Therefore, multi-locality and temporary mobility are promoted together with digitalisation and flexible working opportunities to revitalize society and compensate the decreasing permanent population.