When evil has seized the city. When death stalks every street. One boy must do battle.

Spring 1892, and London is ruled by fear. The brutal Legion have captured the Queen and walled off the city, ushering in a reign of terror. Only the Watchers, a motley band of rebels let by Ben Kingdom, can stop them.

But an evil enemy is secretly scheming to unchain the deadly beasts of Hell, from which no one can escape. As Ben readies for the final fight, only one question remains; will the Watchers be victorious, or could this be Ben's last battle?