The trio chase evildoer Garcia Flynn to the Hindenburg disaster of 1937 in the series premiere of this sci-fi actioner about a professor, a soldier and a scientist teaming up to travel through time to battle a master criminal out to alter human history. Terrorist Garcia Flynn connects with notorious assassin John Wilkes Booth, as Lucy, Wyatt and Rufus chase Flynn to the night of Abraham Lincoln’s assassination. Also, Lucy must put aside a tragedy of her own, and the trio debate altering history.