The discovery of the serves as the season's backbone. Clark finds ancient wall paintings that mirror his own story—a "Naman" falling from the stars. This introduces Christopher Reeve as Dr. Virgil Swann, who delivers the monumental revelation: Clark is Kal-El from the planet Krypton. Key Story Arcs

The relationship between Lex and Lionel turns toxic. Lex struggles to be a better man than his father, but Lionel’s obsession with the Kawatche Caves and Clark’s secret begins to push Lex toward his darker destiny.

The season ends on a massive cliffhanger. The spirit of Clark’s biological father, , speaks through the spaceship, demanding Clark leave Smallville to fulfill his destiny.

Overwhelmed by guilt and unable to face his parents, Clark puts on a Red Kryptonite ring and rides a motorcycle out of town, leaving Smallville behind for the dark streets of Metropolis.