As the series logs its 200th episode, Lois (Erica Durance) talks Clark (Tom Welling) into attending their five-year high-school reunion, but she's comically miffed when no one there remembers the five days she spent as a student. Brainiac 5.0 (James Marsters) uses a Legion ring to take Clark into the past and the future, revealing, among other things, what really happened the night Jonathan died in the new episode "Homecoming."
