Pete and Myka return to Washington to intercept a samurai sword that is to be presented to the president, and they discover a competitor for items that belong to the warehouse.

Artie gets questioned by the Regents and Mrs. Frederic. Meanwhile, Pete, Myka and Claudia become trapped inside Warehouse 13, where a dangerous predicament unfolds.

The team discovers that MacPherson is auctioning artifacts he has siphoned from the Warehouse shelves.

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?