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.

Lois and John Henry Irons can't seem to agree on the best way to stop Morgan Edge. Meanwhile, Jonathan encourages Jordan to focus on strengthening his powers to help locate their dad. Lastly, an old friend is brought in to help with the search.

Superman pays a visit to Morgan Edge. Meanwhile, Lois and Chrissy work together on a story. Lastly, Jonathan finds a welcome distraction during a very stressful school day.

Lois is worried about Jordan as he and Sarah continue to grow closer. Meanwhile, Clark pays Lana a visit. Lastly, Jonathan has been spending more and more time with John Henry.

Superman's worst nightmare comes to life and Lois confronts Leslie Larr. Meanwhile, Lana, Kyle and Sarah agree to stay to help General Lane.

Lois thanks Lana for sticking up for Jonathan when one of the football players mother's starts dogging him for getting football season cancelled. Meanwhile, Jordan's unexpected departure on the mayoral election day leaves Sarah rattled. Lastly, Natalie and Sarah wonder if they notice a spark between John Henry and Lana.

Clark and Lois disagree on the best way to figure out if Ally Allston went to the Inverse World. Meanwhile, John Henry makes a surprising discovery and Lois sets out to track Lucy down.

A weary Lois holds vigil at Superman's bedside. Meanwhile, Jonathan and Jordan continue to worry about their father who seems more human now than ever. Lastly, John Henry and Natalie work together to figure out the best way to defend against Ally Allston's powers.

Chrissy Beppo, with the authorization of the Department of Defense, has a message for the people of Smallville, not only is the merging of planets real, it is happening.

Clark finds himself in uncharted territory, and Lois bonds with a new friend. Meanwhile, Superman pays Bruno Mannheim a surprise visit. Lastly, Lana puts Sarah in charge while she's away at a meeting with Chrissy.

In the wake of learning that Bruno and Peia are married, Clark works to reignite Lois' interest in taking Bruno down. Elsewhere, Natalie meets Matteo's parents for the first time, with disastrous consequences. Meanwhile, the Kent boys clash when Jordan interferes with Jonathan's training at the Firehouse, Lana bonds with General Lane over their shared fear of dating again, and Sarah realizes her mom needs a friend.

Lois and Clark clash with Jordan over his carelessness around using his powers in public, while Jonathan struggles with Kyle's change in behavior at the firehouse. Meanwhile, Sarah grows frustrated with Lana after she accidentally makes things more complicated with Jordan. And finally, after seventeen years behind bars, Lex Luthor is set to be released from prison.

All of Smallville comes together to view a meteor shower, Lex Luthor makes his move.