Thor, a powerful but arrogant warrior, is sent down to Earth has punishment for reigniting a reckless war. But after a dangerous villain from his world sends the darkest forces of Asgard to invade Earth, the hammer-wielding Thor will learn what it takes to be a true hero in order to save mankind.

Steve Rogers volunteers to participate in an experimental program that turns him into the Super Soldier known as Captain America. As Captain America, Rogers joins forces with Bucky Barnes and Peggy Carter to wage war on the evil HYDRA organization, led by the villainous Red Skull.

In 140 AD, the Roman Empire extends all the way to Britain - though its grasp is incomplete, as the rebellious tribes of Caledonia (today's Scotland) hold sway in the far North. Marcus Aquila arrives in Britain, determined to restore the tarnished reputation of his father, Flavius Aquila. It was 20 years earlier that Rome's 5,000-strong Ninth Legion, under the command of Flavius and carrying their golden emblem, the Eagle of the Ninth, marched north into Caledonia. They never returned; Legion and Eagle simply vanished into the mists.

Arthur Bishop is a 'mechanic' - an elite assassin with a strict code and unique talent for cleanly eliminating targets. It's a job that requires professional perfection and total detachment, and Bishop is the best in the business. But when his mentor and close friend Harry is murdered, Bishop is anything but detached. His next assignment is self-imposed - he wants those responsible dead. His mission grows complicated when Harry's son Steve approaches him with the same vengeful goal and a determination to learn Bishop's trade. Bishop has always acted alone but he can't turn his back on Harry's son. A methodical hit man takes an impulsive student deep into his world and a deadly partnership is born. But while in pursuit of their ultimate mark, deceptions threaten to surface and those hired to fix problems become problems themselves.