Alexander Lavrentyev works in the FSB archive: he sorts documents and provides the necessary information to his superiors. One day he attended a banquet celebrating the birthday of his friend and colleague Vasily, where he met a beautiful girl Masha. He begins a relationship with her and his life would be ordinary if not for one glaring incident. A spy from the secretive Omega organization infiltrates the archives to steal state-captured blueprints for a dangerous weapon created by the organization. Having met the enemy in battle, Sasha gains the upper hand, after which the saboteur promises to meet him again. As time passes, Sasha is forcibly delivered to the head of Omega, where he learns that they are fighting against a secret group that has infiltrated the entire control apparatus of the world. Lavrentyev begins working for Omega, saving the world from destruction. Events unfold in such a way that Sasha must not reveal his connections with Omega to his superiors and not expose his beloved girl to danger.