From the New York Times best-selling team of Fred Van Lente and Clayton Henry comes a centuries-spanning race against the clock, straight out of the pages of ARCHER & ARMSTRONG! Prehistoric empires! Dystopian futures! And everywhere in between! The past, present, and future of our universe are about to meet an untimely end, and only the mysterious Ivar Anni-Padda can prevent all three from collapsing in on themselves. Unstuck in time, and pursued by enemies simultaneously across every moment of his time-lost life, can the man called Timewalker save everything that ever was, is, and will be? Get ready for a clock-stopping odyssey into the distant past and far future as the most unlikely Valiant hero of all leaps into his first history-ripping adventure!