After being struck by lightning, CSI investigator Barry Allen awakens from a nine-month coma to discover he has been granted the gift of super speed. Teaming up with S.T.A.R. Labs, Barry takes on the persona of The Flash, the Fastest Man Alive, to protect his city.
Forced to take the intercontinental trip to Los Angeles by train, and determined to chronicle his adventure, disillusioned journalist Tom Langdon finds himself westbound with a variety of characters. While all passengers on the Christmas train appear to be headed for the same destination, Tom has no idea that the rugged locomotives taking him across America will instead detour straight into his heart.
Twenty-four-year-old Kara Zor-El, who was taken in by the Danvers family when she was 13 after being sent away from Krypton, must learn to embrace her powers after previously hiding them. The Danvers teach her to be careful with her powers, until she has to reveal them during an unexpected disaster, setting her on her journey of heroism.
