In the aftermath of a biological catastrophe, a lethal virus carried by rainfall wipes out almost the entire population of Scandinavia. The series follows Simone and her
younger brother, Rasmus, who are ushered into a fortified underground bunker by their father, a scientist working for the mysterious Apollon organization. Years of isolation pass until their father leaves to find a cure, instructing Simone to protect Rasmus at all costs. Driven by survival and the desperate need to reunite with their father, the siblings emerge into a desolate, lawless world reclaimed by nature.They soon encounter a band of young survivors, each grappling with their own trauma and moral ambiguity. Led by the pragmatic Martin, this group becomes a makeshift family as they traverse the ruins of Denmark. The central conflict intensifies when they discover that Rasmus is not merely a survivor but the primary host for the virus. He holds the key to both salvation and total annihilation, making him the most hunted person on the continent. While Simone is motivated by fierce maternal love and a desire to preserve her brother’s humanity, Apollon seeks to weaponize Rasmus’s unique biology, viewing him as a tool for evolution rather than a human life.As the narrative progresses, the group faces harrowing betrayals and the disintegration of their idealistic worldview. The rain remains a constant, looming threat, forcing the characters to confront the dark reality that the virus is not just a disease, but an entity that evolves alongside them. Rasmus struggles with the agonizing weight of his powers, oscillating between a desire for peace and the destructive impulses fueled by the virus within his bloodstream. Simone is forced to make impossible choices, constantly weighing the life of her brother against the survival of the human race. Their journey is a grueling exploration of grief, sacrifice, and the
loss of innocence in an unforgiving landscape. As they approach the heart of the Apollon facility, the line between victim and monster blurs, leading to a climactic confrontation that challenges the very definition of what it means to be human in a world washed clean by death.