© The Author(s) 2020. This paper explores the role of imagination in the lives of Nigerian transnational children and their migrant parent in Ireland. Migration of a parent is a rupture in a child’s life that triggers imaginary processes that are real in their developmental consequences. Following Zittoun and Gillespie, imagination is a process that generates a disjunction from the person’s experience of the “real” world, and uncouples and loops out before it eventually comes back to the actual experience. For the left-behind child, this imaginative loop remains “open” as parents return becomes extended in time. The dilemmas for the migrant parent and child are explored.