Checkmating Aliens

An alien converts a machine to save Earth from global flooding to all life forms destruction doomsday weapon.

Has the corrupted alien captain converted "Operation Earth Shield" to "Operation Kill Earth?" The Doomsday Question is confronting both: humans living on man-made islands due to water-logged Earth land erosion; and, the alien planet's rulers who had sent their navy captain on the rescue mission.

Another dilemma: what's the connection between this crisis and the alien children growing...