The theft of a top-secret file leads Pete and Myka to a Wyoming high school (where they find H.G. Wells working as a teacher named Emily Lake), in a race to stop Sykes from using his own cache of artefacts to destroy them and the Warehouse. Part 1 of 2.

When Pete touches an artefact in the Warehouse which creates an alternative reality in which he was never born, James McPherson is in charge of the Warehouse, and Artie is in jail, he must convince the team to help him return things to normal.