It's a story that will rock the Ultimate Universe's family tree forever as Jimmy Hudson's quest to discover the answers about his past begins! What mission was Wolverine on that led to Jimmy's birth? What is the deadly secret of Project Mother Vine, and why was Wolverine so desperate to shut it down? And as Jimmy hunts ghosts from his past, the ghosts begin hunting him when a mysterious woman with a connection to Logan resurfaces and Jimmy finds himself caught in a brutal life-and-death battle he can't hope to win -against the brother he never knew he had! Jimmy's loyalties are put to the test as a new villain is born. What is the secret Wolverine never shared with his son? Learn the truth here! Collecting ULTIMATE COMICS WOLVERINE #1-4.