Recouping from their losses, and breaking in replacements, Colonel Rama is briefed for a mission that potentially violates exo-solar planetary research treaties. Rediscovered among archives of a telescope considered lost in the prior century, the data includes surface changes on the alien world that may suggest intelligent life. Taking off under the cover of a scientific survey mission, the Mockingbird is actually loaded for bear. Conscious of the fact they are alien invaders, the surface team faces an indigenous species with aggressive tendencies beyond belief. The question is why?