After a power station attack, Alfie, Daveboy, and Martha attempt to help Gully Troy restore public opinion of PWEs. Meanwhile, Dr. Glubb tries to stop Foulkes’ reckless use of Lullaby.

Thomas’ hesitant return home is further complicated by Samantha’s kidnapping. Sally involves Daveboy in the aftermath of Foulkes’ dinner party. An increasingly concerned Lucius seeks to free the PWEs.

As the city further descends into a Lullaby-induced chaos, Alfie and Martha break into L7 to save Lucius – and the rest of the world.

With less than 48 hours, Alfred, Thomas & Martha concoct a plan to infiltrate Raven headquarters with Daveboy and Lucius to steal Project Stormcloud.

Salt is hell-bent on releasing Project Stormcloud upon London… unless Alfred and his mates can stop it.

While Alfred is enlisted to help extract Lucius Fox from Raven headquarters, Prime Minister Aziz sets in motion a plan that pits Aleister Crowley against John Ripper.

While Alfred prepares to depart England for good, Bet and Peggy Sykes set out to rescue their old friend Lord Harwood from imminent danger.

While Salt sits down with the League to discuss peace, Alfred confronts Gully to do the same. And Martha finally comes clean to Thomas about her dilemma.

Still haunted by tragedy, Alfred agrees to join Gully’s team on an upcoming job. Meanwhile, pressure begins to take its toll on Harwood and direct him toward Project Stormcloud.

Albert and Palmerston put their reputations on the line, and Victoria must fight against her better judgment to decide where to place her allegiance.

The world’s eyes are on the Great Exhibition, and the Royal couple. Does triumph or failure beckon? Lives will be changed forever as intrigue unfolds amongst the exhibits.

Doctor Turner is concerned by the spread of tuberculosis in the community, Jenny tries to repair a father and daughter’s fractured relationship, and Sister Bernadette receives devastating news.