Season seven of British spy thriller "MI-5" opens with Adam Carter (Rupert Penry-Jones) valiantly battling to move a car bomb away from a densely packed memorial service. Meanwhile Harry secures the release of Lucas North (Richard Armitage), a MI-5 officer imprisoned in Russia for eight years. It's not long, however, before Ros begins to suspect Lucas' loyalties. The rest of the season deals with a top secret Cold War-era operation named Sugarhorse 而且，你忘了吗？我可是花间月的剑灵，有我在，你觉得还会有什么危险的东西能够威胁到我们吗？”