1956 - France. A priest is murdered. An evil is spreading. The sequel to the worldwide smash hit follows Sister Irene as she once again comes face-to-face with Valak, the demon nun.

A dark force threatens Alpha, a vast metropolis and home to species from a thousand planets. Special operatives Valerian and Laureline must race to identify the marauding menace and safeguard not just Alpha, but the future of the universe.