When the Trickster escapes from police custody, the Flash must stop him from wreaking havoc on the city. As the Flash faces off against his arch-nemesis, he must also deal with personal challenges and uncover the Trickster's master plan.
In 'The Flash III: Deadly Nightshade', Barry Allen, also known as The Flash, battles his arch-nemesis, the deadly Nightshade, who possesses similar superhuman speed. As Barry juggles his personal life and his secret identity as a crime-fighting superhero, he must overcome his own doubts and fears to save the city from Nightshade's destructive plans.