Captain America's in a race across the world to solve a mystery from World War Two! James "Bucky" Barnes has led many lives. Once he was Captain America's partner Bucky, a proud member of the Invaders, a founder of the original Young Allies. Now he is Captain America, the Sentinel of Liberty, and when an old enemy suddenly reappears, Jim must re-open the last, unsolved case of the Young Allies- to stop a menace that threatens the world! Roger Stern (Amazing Spider-Man) travels from World War II with Nick Dragotta (X-Men First Class) to the modern age with Marco Santucci (Siege: Spider-Man) to tell a time-tossed epic tale of mystery, intrigue, and high adventure!