In the streets of North Paris, in a famous ghetto place called Chapelle, Isaac sells drugs for his father Abraham. Abraham loves money in an almost religious way. Rebecca is in love with Isaac. She wants to help Isaac find a new lifestyle.

In the aftermath of WWI, a young German who grieves the death of her fiancé in France meets a mysterious French man who visits the fiance’s grave to lay flowers.

In the 28th century, Valerian and Laureline are special operatives charged with keeping order throughout the human territories. On assignment from the Minister of Defense, the two undertake a mission to Alpha, an ever-expanding metropolis where species from across the universe have converged over centuries to share knowledge, intelligence, and cultures. At the center of Alpha is a mysterious dark force which threatens the peaceful existence of the City of a Thousand Planets, and Valerian and Laureline must race to identify the menace and safeguard not just Alpha, but the future of the universe.