Picking up where the previous season ended, Claudia is trapped in the Warehouse with Paracelsus and they battle for control of the Warehouse. Pete, Myka. Jinks and Artie try to find a way to get in. Myka finds a way but they find Claudia in under Paracelsus' control. They try to release her from his control. But as they do that, the Warehouse changes. Artie thinks Paracelsus went back in time and changed history. So they need to find out when he went back and what he did. Claudia does that, while Artie tries to find a way to go back in time. Claudia determines he went to back to Warehouse 9 and killed the regents and from that moment there were no longer any regents so he ran the Warehouse as he wanted. Pete and Myka go back. Artie tries to keep Paracelsus in the present from finding out what they are doing. Artie's captured and discovers that some of his friends, Vanessa Calder and Hugo Miller are working for him. Pete and Myka arrive and work with Warehouse 9 agent, Lisa da Vinci to... Written by rcs0411@yahoo.com

Pete and Myka return to Washington DC, to investigate a series of victims drowning on dry land where they run into a pair of fellow Secret Service agents with a surprising secret - a secret which forces Myka and Pete to evaluate where their own relationship has taken them. Meanwhile, Artie uses an artifact to take Claudia back into his memories of an old case, to show her the truth about her sister. Written by Anonymous

Pete and Steve immerse themselves in a Renaissance Faire as they search for a dangerous artifact which animated both a horseless chariot and a life-size chess piece and set them against the faire patrons. Meanwhile, Claudia risks combining artifacts in a desperate attempt to revive her sister Claire from her artifact-induced coma; Myka struggle to prevent Artie from finding out and stopping her. Written by Anonymous

Pete, Myka, and Artie help Kelly Hernandez (Pete's ex-girlfriend) save her grandmother who is trapped inside a Telenovela, and in the process fall in and become characters of this Latino Soap Opera themselves. Meanwhile, Claudia and Steve investigate a strange accident at a university that leads them to discover an artifact that literally duplicates its users. Written by Anonymous

When Claire is missing, they try to find out what happened to her. They discover that Benedict Valda has her and he has her under his control. He is using her. When they fail to stop him, they return to the Warehouse and discover that the artifacts and other things are vanishing. Artie deduces that he is moving the Warehouse and using Claire to do it. So Pete, Myka and Claudia try to find them and stop them. While Artie and Jinks try to do what they can to slow him down. Written by rcs0411@yahoo.com

The team shares stories of their defining moments. Pete has a hard time accepting the end of Warehouse 13. Claudia has a difficult time accepting her future role as the Warehouse caretaker.