Clark is disturbed by visions of his destiny when he meets an old woman (guest star Jackie Burroughs) who can see the future. Scheming Lex wants to use the seer's gift to learn his own destiny and more about Clark's secret. Meanwhile, an old man (guest star George Murdock) discovers a "fountain of youth," and once restored to his teen self (guest star Eric Olsen), seeks revenge.

Who is Harry? Lana meets wheelchair-bound retiree Harry while volunteering at a retirement community. The man falls into a kryptonite-littered pond, and is restored to his youth. Clark, Lana, Chloe, and Pete later meet him at "The Beanery" coffee shop. A gifted pianist, Harry has a vendetta of revenge and sets out to murder by strangulation with a piano wire. He has already served prison for murder on revenge for being passed over for a scholarship to the music conservatory. Now he wants to kill descendants of the jury who convicted him. Young Harry kills one man, and attempts to kill "The Beanery" waitress, whose grandmother was on the jury. Clark saves her, by shielding her body when Harry pushes her in front of an oncoming truck. As he looks for Harry, Harry jumps out and stabs Clark in the chest, but the knife shatters instead of plunging into him.

Who is Cassandra Carver? Clark meets retiree Cassandra while volunteering at the same senior home. Cassandra went blind the day of the meteor shower, and now has visions of the future. As she holds Clark's hand, he sees her vision of gravestones of his parents, Pete, Chloe, and Lana. Clark interprets the vision that he'll outlive everyone he loves. Later, Cassandra tells Clark she knows he's special, since he is the only one who has ever seen future visions along with her. Before they met, Cassandra had seen Clark save people in her visions. She thinks his destiny is to help people, save them from fear and darkness. She tells Clark he can either fear the future or embrace it. Cassandra says she'll keep his secret.

What's up with Lex? Lex learns of Cassandra's seer gift from Clark. The first time he visits, Lex asks for insight into Clark. Cassandra only offers to tell his future. Lex refuses. Still obsessed with his near-death accident, Lex shows Clark his wrecked car, and asks what Clark remembers from the accident. Clark replies "Just that I pulled you out."

How it ends: Young Harry shows up at the Kent's home to check a reported gas leak. Mrs. Kent is suspicious, and won't let him enter. Harry gets in and says he wants to kill her husband. Martha slams Harry in the head with a vase, then runs to hide in the silo. Harry attacks her with a machete, but Martha pulls the chain releasing the grain from above, burying them both. Realizing his parents are in danger, since Jonathan's father was a jury member, Clark arrives at home just as his father does, and they dig Martha out. Harry was also buried and transforms from his youthful to old self.

Meanwhile, Lex visits Cassandra a second time to discover his destiny. As they hold hands, Cassandra sees a vision of Lex in the office of the US presidency. Then Lex is in a beautiful field of flowers. When he touches a flower, all turns to a scene of gruesome death and apocalypse, including blood raining down from the sky on Lex, standing amid the destruction with one gloved hand. The horrible vision kills Cassandra.