Superman and Lois' return to idyllic Smallville is set to be upended by mysterious strangers.

As Smallville celebrates its first Harvest Festival since Martha’s passing, Clark is reminded what his mother meant to him and learns a lesson that will help him move past her death. Meanwhile, Lois makes a breakthrough in the investigation of Morgan Edge. Lastly, Kyle tries to reconnect with Lana, but it seems like he might be falling back into his old ways.

Clark helps Lois prepare for a procedure but must leave the boys with her to help John Henry and General Lane track down the Mannheims.

Luthor plans to move LuthorCorp to Smallville, but finds opposition in Lana.