"Beginnings"
Nathaniel Essex has been transformed into Mister Sinister and the battle begins with Cyclops and Phoenix. Still stuck in the past Scott and Jean battle Sinister in the sewers of 1859 London. During the battle, Scott and Jean convince Sinister to help them stop Apocalypse's plan to take over the world.
Meanwhile, Apocalypse has infiltrated Buckingham Palace and is about to attack the royal family. Cyclops and Phoenix intervene and a reluctant Sinister lends a hand in order to stave off Apocalypse's plan for the future.