In 1937, old enemies of Gabriel Van Helsing unite to bring one of the most powerful beings that exist: the Headless Horseman, in order to kill him. Drawn to the murders of Sleepy Hollow, Gabriel will have to collaborate with others, including the young agent Ichabod Crane, in order to find a way to defeat this vengeful spirit... unless, as Gloria supposes, it is not him the real enemy.
