When time is of the essence and teams face unexpected contextual changes, they must adapt quickly, sometimes even in real time, that is, they may have to improvise. This paper adopts an inductive approach to explore how teams decide to engage in improvised adaptation, and what happens during those processes for improvisation to be successful. The study analyzes improvisation from the perspective of paradox theory and identifies six paradoxical tensions driven by these contexts: deployment, development, temporal, procedural, structural, and behavioral tensions. We propose a dynamic equilibrium model of team improvised adaptation that leads to team plasticity.