Jack and Henry struggle to cope with their memories of the lost future. As Henry grimly suppresses his grief, Jack clings to the hope that he and Allison are destined to marry.
A force field my engulf the Global Dynamics facility. Jack, Henry, and Stark get Todd's help to try and shrink the field.
A drastic isolated freeze at the hot-spring causes extremely bad weather in Eureka. Jack tries to find out the cause of the freeze while also resolving the custody battle with Abby and Zoe.
Zoe is upset over her parents' custody battle. She uses a virtual reality device to get out her frustrations. Later, she hurls the device at her father. Jack starts seeing people vanishing all around Eureka. He starts to wonder if maybe he is in some sort of virtual reality himself.
Carter tries to find out what is causing a debris cloud to form over Eureka before it destroys the whole town.
A toxic waste spill causes people in Eureka to share the same dreams. Jack struggles to keep order and find the cause of the epidemic.
Fargo's grandfather awakes from a 50 year cryogenic state. Unfortunately he has no recollection of the events leading to his disappearance.
When an experiment goes wrong, an anti-social genius must save Eureka.
Carter disappears. An abandoned research project on invisibility haunts the town of Eureka.
Many strange things start happening in Eureka, leading a number of citizens to believe a biblical plague may be upon them. Jack thinks that the Reverend, who has a scientific background, deliberately created the crisis to increase attendance at church.
Jack becomes irresistable to the women of Eureka. They analyze a sample of his blood and discover that his body is overproducing a hormone that stimulates sexual attraction.
Objects in the town mysteriously start to turn to gold. The prime suspect is an artist who couldn't get along with Stark when he was working at Global Dynamics.
Following Henry's announcement that the Alchemist's Curse contagion has mutated into deadly flesh-eating bacteria, the Global Dynamics defense computer kicks into action, locking some people in and keeping others out.