This article employs the theory of social minds proposed by Alan Palmer ("Social Minds in the Novel," 2010) to argue for the emergence of a group-based thinking, feeling, and acting focused on reforming the status quo, using David Whitley's Agora trilogy (2009--2013) as an example of Radical Fantasy. This particular subgenre of fantasy is seen as radical in the way it envisions an intergenerational struggle by the oppressed against political, racial and economic injustice, resulting in a new social order (Deszcz-Tryhubczak, 2016). The notion of transformation, it is argued, is a characteristic quality of mental functioning in Radical Fantasy storyworlds. Beyond examining Whitley's trilogy in these terms, the article also argues for a broader interest in intergenerational collective action in the field of children's literature as a way of acknowledging texts that extend the aetonormative paradigm of children's books (Nikolajeva, 2010).