In 2370, Boraal II suffered an atmospheric dissipation. There were severe radiation storms for several days prior to the dissipation, which forced Rozhenko and a group of the Boraalans into caves. The USS Enterprise-D responded to Rozhenko's distress call, and arrived in time to watch all life on the planet be destroyed and the planet become uninhabitable. The Enterprise's systems were slightly damaged by the plasmonic discharges during the dissipation.
Although most of the Boraalans were killed, Rozhenko was successful in transporting his group to the Enterprise holodeck, violating the Prime Directive and forcing Captain Picard to order that the Boraalans be resettled. Dr. Beverly Crusher and Commander Data chose Vacca VI, a world slightly less hospitable than Boraal II, as the new home for the Boraalans. (TNG: "Homeward")