The USS Atlantia has been tasked with investigating the region labelled as ‘Subspace Munitions Range Four-Three-Four’ last visited by the USS Voyager. Voyager’s only encounter with the region saw them getting attacked by long-range subspace warheads and their only means of detecting the warheads was a gravimetric disturbance right before the warheads emerged from subspace. Atlantia is tasked with determining the origin of the warheads and if possible, making first contact with the species that launched them.