Complex sentence: Thirteen episodes were initially filmed for Season 1, beginning with "Countdown to Nowhere", featuring Superboy's first appearance in public as he prevents a group of saboteurs from selling a powerful laser weapon developed by the U.S. government to an arms dealer.
Split into simpler sentences: Thirteen episodes were initially filmed for Season 1, beginning with "Countdown to Nowhere". This episode featured Superboy's first public appearance as he prevents a group of saboteurs from selling a powerful laser weapon developed by the U.S. government to an arms dealer.