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

While adjusting to their new lives in Smallville, Lois and Clark make an important decision concerning one of their sons. Meanwhile, tensions begin to rise between Lois and Morgan Edge. Lastly, Lana Lang Cushing invites the Kent family over for a barbecue.

Clark shares some of his Kryptonian history with Jordan and Jonathan during a family breakfast. Meanwhile, Lois and Chrissy dig deeper to uncover the truth about Morgan Edge.

While sitting in the stands at the high school football game, Lois and Chrissy spot fish out of water Morgan Edge conversing with Mayor Dean and Kyle Kushing, and the two see right through this insincere move to try to win over the town. Meanwhile, Clark agrees to help Lois out at a town hall meeting, but things get tense when he finds himself pulled in two different directions. Lastly, Jonathan is having mixed emotions about Jordan's newfound status.

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 reconsiders his decision to let Jordan play football. Meanwhile, Lois' continued investigation of Morgan Edge requires her to trust an unexpected ally.

Clark struggles to help Jordan who is grappling with a new power. Meanwhile, Lois enlists Clark's help which leads to a surprise encounter.

Clark encourages Lois to reach out for help after noticing her reaching a breaking point. Meanwhile, Jonathan finds himself in a dangerous situation. Lastly, Kyle encourages Sarah to audition for the musical revue at school.

Chrissy and Clark team up to piece together the significance of Smallville to Morgan Edge.

Lana reaches out to Lois and Clark when Kyle starts behaving strangely. Meanwhile, Jonathan opens up to Jordan. Lastly, Sarah storms out after accusing her mom of always covering for her dad.

Clark makes a startling discovery about Morgan Edge.

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 and Clark struggle as a couple while Chrissy adjusts to running The Smallville Gazette with Lois. Jonathan faces new challenges on the football field, and secrets threaten to destroy Jordan and Sarah's growing relationship. Meanwhile, Kyle grows concerned over Lana's involvement with a new mayoral candidate. Lastly, John Henry Irons and his daughter Natalie attempt to make this new Earth their home.

Clark opens up to Lois about his ongoing struggle with visions and admits that there is only one person who might be able to help. Meanwhile, Lana receives some unexpected news and tensions begin to rise between Lois and Chrissy. Lastly, Sarah breaks plans with Jordan to spend time with Natalie.

Lois reaches out to Ret. General Lane as Clark's visions become worse during heated arguments with both Jonathan and Jordan. Meanwhile, Lana shares her frustrations with Kyle. Lastly, Natalie learns that her father didn't follow through on a promise he made to her.

Lois and Chrissy are on a mission to find Lois' sister Lucy and Jonathan and Jordan become more and more unsettled as Clark's painful visions continue. Meanwhile, Lana, Kyle and Sarah share a family breakfast and discuss Sarah's upcoming quinceañera. Lastly, Natalie and her father share a bonding moment.

Lana, Kyle and Sarah prepare for Sarah's quinceañera, but things don't end up going as smoothly as they had hoped. Clark finds himself struggling with feelings of guilt about what happened to John Irons and Lois worries that she might have been wrong about Ally. Meanwhile, Jonathan learns that Ret. General Samuel Lane is planning to train Jordan. Lastly, Chrissy goes searching for the truth about Lois.

Lois tells Clark that she and Chrissy plan to do a deeper dive into the Inverse Society and Lana and Sarah try to comfort each other after the fallout at Sarah's quinceañera. Meanwhile, Jordan notices something suspicious in Jonathan's book bag. Lastly, Lt. Mitch Anderson finds himself under fire for the deterioration of the department of defense's relationship with Superman.

Superman pleads with Lt. Anderson to investigate Ally Allston and Lois receives some very upsetting news. Meanwhile, Lois helps Lana prepare to fight the good fight. Lastly, Jordan is still irritated with Jonathan for lying to him.

Lois, Clark, and Natalie notice a difference in John Henry's behavior and fear something might be very wrong. Meanwhile, Kyle encounters an awkward moment with Lana while stopping by the house to pick Sarah up for school. Lastly, Jonathan and Jordan brace themselves when they realize a talking to from their parents is headed their way.

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.

Superman races through the portal after Ally Allston, but when he arrives on the other side, he discovers everything on this parallel earth is... bizarre. Navigating his way through deceivingly familiar faces and landscapes, Superman goes on one wild ride in his fight to stop Ally from merging.

We pick up right where we left off with Jon-El smirking at Lois, who is still standing on the porch with Jordan. Jon-El, catches sight of his doppelganger Jonathan, standing not too far away. He lunges at him and Jordan tries to intervene but Jon-El appears to be stronger and faster than him.

We pick up right where we left off with Clark levitating in front of Lana. Meanwhile, Jordan and Jonathan question whether Lois and Clark are telling them the complete story. Lastly, Natalie tries her best to get Sarah to acknowledge Jordan.

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.

Lois' undercover assignment reveals a deadly foe that promises to change the Kent family forever. Meanwhile, the Kent boys find themselves being pulled in opposite directions.

Clark and Chrissy both notice a small crack in Lois' game face. Sarah and Jordan have an awkward encounter, and Lana receives a panicked phone call.

Lois and Chrissy pursue a new lead in the Mannheim investigation against Clark's wishes. Meanwhile, Jonathan, Jordan, and Nat face an unexpected obstacle.

Lois interrupts an intense conversation between Clark and John Henry. Meanwhile, Jonathan has a heated discussion with Candice's dad.

Clark and General Lane are both having a hard time giving Lois room to make her own decisions. Meanwhile, Lana and Sarah have a run-in with an old friend at the diner.

Clark finds himself in uncharted territory, and Lois bonds with a new friend. Meanwhile, Superman pays Bruno Mannheim a surprise visit.

Lois and Clark dig deeper on Bruno Mannheim, starting with his connections to Hob's Bay Medical Center, while Jonathan and Jordan panic at home over Lois' dire diagnosis.

After learning about Bruno and Peia, Clark works to reignite Lois' interest in taking Bruno down; elsewhere, Natalie meets Matteo's parents, with disastrous consequences.

Superman and John Henry clash over how to handle Bruno Mannheim, while Lois worries over upcoming treatments and confides in Lana about her early courtship with Clark.

Lois attempts to interview Peia in the hopes of unearthing the truth about an old case, while Clark struggles to spend quality time with the boys.

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.

Finally, after seventeen years behind bars, Lex Luthor is set to be released from prison. 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.

All of Smallville comes together to view a meteor shower, and Lex Luthor makes his move to take down Superman and Lois.