Senior co-administrator of the Norcoast Salmon Research Facility, Dr. Mackenzie Connor was a biologist who studied the spawning habits of salmon. Then, last season, just as she and Dr. Emily Mamani were starting their research, they were interrupted by the arrival of Brymn, the first Dhryn to set foot on Earth. And suddenly everything changed for the human race, and all the member races of the Interspecies Union. Base was attacked, Em was kidnapped by the mysterious Ro, and Mac and Brymn had to flee for their lives to Dhryn home world. Now the members of the IU feel the only hope of stopping the Dhryn is to contact the Ro and ask for help. But no one knows how to accomplish that.