As nations gather at Cop27 to discuss the climate crisis, in the Pacific island nation of Fiji dozens of villages could soon be underwater. For years, politicians and scientists have been talking about the prospect of climate migration, but in Fiji – where this process has already begun – a national blueprint has been developed to relocate at-risk villages, and the rest of the world is watching. Pacific editor Kate Lyons goes to Fiji to see what this plan looks like in action and the true cost of leaving your home behind