Lois and Clark struggle as a couple; Chrissy adjusts to running The Smallville Gazette with Lois; Jonathan faces new challenges on the football team; secrets threaten to destroy Jordan and Sarah's growing relationship.

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; tensions being to rise with Lois and Chrissy; Sarah breaks plans with Jordan to spend time with Natalie.

Lois reaches out to retired Gen. Lane; Clark's visions become worse during heated arguments with both Jonathan and Jordan; Lana shares her frustrations with Kyle.

Lois and Chrissy go on a mission to find Lois' sister Lucy; Jonathan and Jordan become more and more unsettled as Clark's painful visions continue;

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.

Lois tells Clark that she and Chrissy plan to do a deeper dive into the Inverse Society; Lana and Sarah try to comfort each other after the fallout at Sarah's quinceañera; Jordan notices something suspicious in Jonathan's book bag.

Superman pleads with Lt. Anderson to investigate Ally Allston; Lois receives some very upsetting news; Lois helps Lana prepare to fight the good fight; 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; Kyle encounters an awkward moment with Lana while stopping by the house to pick Sarah up for school.

Lois thanks Lana for sticking up for Jonathan when he is taunted for getting football season canceled; Jordan's unexpected departure on the mayoral election day leaves Sarah rattled.

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.

Jon-El catches sight of his doppelganger Jonathan; Jon-El lunges at him and Jordan tries to intervene, but Jon-El appears to be stronger and faster than him.

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

Superman is rendered powerless by Ally's attack, and the others rally as the two Earths merge.

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.