In the season two premiere, we pick up right where we left off. MacPherson has blown Artie to smithereens, and disappeared. Is Leena really a traitor? Where has Claudia gone? How will Pete, Myka and the Warehouse fare without Artie? What other havoc did MacPherson wreak when he was alone in the Warehouse? And is there yet a new villain on the horizon?

Claudia has just been given her first assignment, but when it involves a real human torch and H.G. Wells could it be too much for her to handle? Not to mention an appearance by an old love of Artie's

Someone is using Artie's artifacts to commit a series of murders.

Pete and Myka use H.G. Wells's time machine to travel back to 1961.

When Mrs. Frederic is stricken ill, the agents must search for a cure before it's too late. Their quest takes them to Egypt and the long-lost Warehouse 2.

The team tries to track down their rogue member, and discover the artifact they have is unexpectedly powerful. Meanwhile, Claudia wonders about her future with the Warehouse team and Pete must choose between Kelly and the mission.

When we last left agents Myka Bering and Pete Lattimer at the conclusion of season 2, Myka had decided to leave the top secret team with little to no warning. As season 3 begins, Artie fills Myka's shoes with 'The New Guy,' which also happens to be the name of the season premiere episode.

As Sykes begins his end game, the agents discover that Helena is still alive... and teaching high school literature. Meanwhile, Jane reveals the full extent of her plan but one agent will lose their life carrying it out.

Pete and Myka race to stop Sykes from using his own cache of artifacts to destroy them and the Warehouse.

In the aftermath of the warehouse's destruction, the Warehouse team races against the clock to find a way to undo time itself and put right what went wrong. However, Artie finds himself facing a difficult decision when he is warned that saving the warehouse will unleash an even greater evil.

While Pete and Myka investigate a series of artifact-related growth spurts, Artie reluctantly takes Steve and Claudia with him to track down Brother Adrian before he can steal more artifacts from the warehouse.

While Pete and Myka travel to West Virginia to investigate a rust-like infection among steelworkers, Steven and Claudia go to Steven's home to find a way to break the metronome's hold on him. Meanwhile, Helena, Leena, and Mrs. Frederic confront Artie with their knowledge of what he has done.

H.G. has created a new life for herself in Wisconsin, but calls in the agents when she comes up against an unidentified artifact. Meanwhile, Abigail joins the others on the floor of the warehouse to track down the source of mysterious tremors that threaten to destroy the building.

While the team deals with the news that Warehouse 13 is moving, Mrs. Frederic has them load their greatest memories of their missions into an artifact for future generations.