The superheroes only have one hour to find Dr. Silvana's Doomsday Machine bef...
Legends of the Superheroes
Season 1 Episode 1: The Challenge
The superheroes only have one hour to find Dr. Silvana's Doomsday Machine before it destroys all life on Earth. Their only leads are clues left by the arch villains, each one of which might be a trap.