The Blossoming of Big Tree

An old woman has to coordinate the defense of her country after a colonizer invades. She is autistic and struggles to fit in because her village has a very tight sense of community, and so, to avoid being seen as anti-social, she accepts to chair the committee for national defense for it is easier for her to interact with other people over work. The job is simple, requiring her to coordinate responses to the climate crisis, until the colonizer attacks them to capture the technology that makes this country a solarpunk utopia. It is a loose union of hundreds of thousands of self-sufficient villages, and they have no army, no weapons, so how will she coordinate their defense? Will the invasion lead to a disintegration of their utopia, or will they find a way to defeat the colonizer?