Boone investigates a serial killer programmed with a CVI who tried to kill Da'an when he enacted an ancient taelon myth of good conquering evil.

Several soldiers who have volunteered to train in Taelon Interdimensional flight have instead been the victims of strange experiments - some have disappeared all together. A high ranking officer kidnaps Da'an in an attempt to have his men released.

At resistance headquarters, Boone meets two molecular biologists, Sahjit Jinnah and his fiancee Rayna Armitraj, who are studying the alien probe captured after it wreaked havoc in an Amish community. A power surge causes Rayna to cut off the top of the probe, which responds by dematerializing her. Unaware of the situation, Sahjit and Boone discuss with Doors and Auger the probe's purpose, recalling its ability to replicate butterflies into killers. Launching the resistance into battle with the probe that may be studying Earth.

When a taelon experiment to create an new hybrid warrior goes wrong, an ancient alien evil is unleashed upon the Earth.

The Taelons introduce interdimensional travel to human customers. A young deaf-mute boy and his mother become separated during their travels through the portal. The boy appears and is now able to speak and hear. The boy is examined by Dr. Park, a resistance doctor, who discovers that he has been implanted with a device to restore his missing senses. Boone suspects that the Taelons are using the portal to perform experiments on humans. Doors sends Sahjit through the portal with a tracking device.